task_url stringlengths 30 116 | task_name stringlengths 2 86 | task_description stringlengths 0 14.4k | language_url stringlengths 2 53 | language_name stringlengths 1 52 | code stringlengths 0 61.9k |
|---|---|---|---|---|---|
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #CoffeeScript | CoffeeScript |
combinations = (n, p) ->
return [ [] ] if p == 0
i = 0
combos = []
combo = []
while combo.length < p
if i < n
combo.push i
i += 1
else
break if combo.length == 0
i = combo.pop() + 1
if combo.length == p
combos.push clone combo
i = combo.pop() + 1
combos
... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Modula-2 | Modula-2 | IF i = 1 THEN
InOut.WriteString('One')
ELSIF i = 2 THEN
InOut.WriteString('Two')
ELSIF i = 3 THEN
InOut.WriteString('Three')
ELSE
InOut.WriteString('Other')
END; |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #PowerShell | PowerShell | # single-line comment |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Processing | Processing | // a single-line comment
/* a multi-line
comment
*/
/*
* a multi-line comment
* with some decorative stars
*/
// comment out a code line
// println("foo");
// comment at the end of a line
println("foo bar"); // "baz" |
http://rosettacode.org/wiki/Color_quantization | Color quantization | full color
Example: Gimp 16 color
Color quantization is the process of reducing number of colors used in an image while trying to maintain the visual appearance of the original image. In general, it is a form of cluster analysis, if each RGB color value is considered as a coordinate triple in the 3D colorspace. There... | #Wren | Wren | import "dome" for Window
import "graphics" for Canvas, Color, ImageData
import "./dynamic" for Struct
import "./sort" for Sort
var QItem = Struct.create("QItem", ["color", "index"])
var ColorsUsed = []
class ColorQuantization {
construct new(filename, filename2) {
Window.title = "Color quantization"
... |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #AutoHotkey | AutoHotkey | #SingleInstance, Force
#NoEnv
SetBatchLines, -1
; Uncomment if Gdip.ahk is not in your standard library
;#Include, Gdip.ahk
; Start gdi+
If !pToken := Gdip_Startup()
{
message =
( LTrim
gdiplus error!, Gdiplus failed to start.
Please ensure you have gdiplus on your system.
)
MsgBox, 48, %mes... |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #Sidef | Sidef | require('GD')
func pinstripes(width = 1280, height = 720) {
var im = %O<GD::Image>.new(width, height)
var colors = [0, 255].variations_with_repetition(3)
var paintcolors = colors.shuffle.map {|rgb|
im.colorAllocate(rgb...)
}
var starty = 0
var barheight = height//4
for... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Common_Lisp | Common Lisp | (defun map-combinations (m n fn)
"Call fn with each m combination of the integers from 0 to n-1 as a list. The list may be destroyed after fn returns."
(let ((combination (make-list m)))
(labels ((up-from (low)
(let ((start (1- low)))
(lambda () (incf start))))
(mc (... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Modula-3 | Modula-3 | IF Foo = TRUE THEN
Bar();
ELSE
Baz();
END; |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #ProDOS | ProDOS | IGNORELINE your text here |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Prolog | Prolog | % this is a single-line comment that extends to the end of the line |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #AWK | AWK |
BEGIN {
nrcolors = 8
for (height=0; height<20; height++) {
for (width=0; width<nrcolors; width++) {
# print (ANSI) basic color and amount of spaces
printf("\033[%dm%*s", width + 40, 64 / nrcolors, " ")
}
# reset color and print newline
printf("\033[0m\n")
}
}
|
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #BASIC | BASIC | SCREEN 1,320,200,5,1
WINDOW 2,"Color bars",(0,10)-(297,186),15,1
FOR a=0 TO 300
LINE (a,0)-(a,186),(a+10)/10
NEXT
loop: GOTO loop |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #SmileBASIC | SmileBASIC | FOR I=1 TO 4
COLIDX=0
YTOP=(I-1)*60
FOR X=0 TO 399 STEP I
IF COLIDX MOD 8==0 THEN
RESTORE @COLOURS
ENDIF
READ R,G,B
GFILL X,YTOP,X+I,YTOP+59,RGB(R,G,B)
INC COLIDX
NEXT
NEXT
@COLOURS
DATA 0,0,0
DATA 255,0,0
DATA 0,255,0
DATA 0,0,255
DATA 255,0,255
DATA 0,255,255
DATA 255,255,0
DATA 255,255,255 |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #Tcl | Tcl | package require Tcl 8.5
package require Tk 8.5
wm attributes . -fullscreen 1
pack [canvas .c -highlightthick 0] -fill both -expand 1
set colors {black red green blue magenta cyan yellow white}
set dy [expr {[winfo screenheight .c]/4}]
set y 0
foreach dx {1 2 3 4} {
for {set x 0} {$x < [winfo screenwidth .c]} {i... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Crystal | Crystal |
def comb(m, n)
(0...n).to_a.each_combination(m) { |p| puts(p) }
end
|
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Monicelli | Monicelli |
che cosè var? # switch var
minore di 0: # case var < 0
...
maggiore di 0: # case var > 0
...
o tarapia tapioco: # else (none of the previous cases)
...
e velocità di esecuzione
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #PureBasic | PureBasic | ;comments come after an unquoted semicolon and last until the end of the line
foo = 5 ;This is a comment
c$ = ";This is not a comment" ;This is also a comment |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Python | Python | # This is a comment
foo = 5 # You can also append comments to statements |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Befunge | Befunge | <v%"P": <<*"(2"
v_:"P"/"["39*,, :55+/68v
v,,,";1H" ,+*86%+55 ,+*<
73654210v,,\,,,*93"[4m"<
>$:55+%#v_:1-"P"%55+/3g^
39*,,,~@>48*,1-:#v_$"m[" |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #C | C |
#include<conio.h>
#define COLOURS 8
int main()
{
int colour=0,i,j,MAXROW,MAXCOL;
struct text_info tInfo;
gettextinfo(&tInfo);
MAXROW = tInfo.screenheight;
MAXCOL = tInfo.screenwidth;
textbackground(BLACK); //8 colour constants are defined
clrscr();
for(colour=0;colour<COLOURS;colour++)
{
getch();... |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #True_BASIC | True BASIC | LET w = 640
LET h = 480
SET WINDOW 0, w, 0, h
LET h = h/4
LET y2 = h-1
FOR i = 1 TO 4
LET col = 0
LET y = (i-1)*h
FOR x = 1 TO w STEP i
IF remainder(col,15) = 0 THEN LET col = 0
SET COLOR col
BOX AREA x, x+i, y, y+h
LET col = col+1
NEXT x
NEXT i
END |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #Visual_Basic_.NET | Visual Basic .NET | Public Class Main
Inherits System.Windows.Forms.Form
Public Sub New()
Me.FormBorderStyle = FormBorderStyle.None
Me.WindowState = FormWindowState.Maximized
End Sub
Private Sub Main_Load(sender As Object, e As EventArgs) Handles Me.Load
Dim Index As Integer
Dim Colors() As ... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #D | D | T[][] comb(T)(in T[] arr, in int k) pure nothrow {
if (k == 0) return [[]];
typeof(return) result;
foreach (immutable i, immutable x; arr)
foreach (suffix; arr[i + 1 .. $].comb(k - 1))
result ~= x ~ suffix;
return result;
}
void main() {
import std.stdio;
[0, 1, 2, 3].comb(... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Morfa | Morfa |
if(s == "Hello World")
{
foo();
}
else if(s == "Bye World")
bar();
else
{
baz();
}
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Quackery | Quackery |
( The word "(" is a compiler directive (a builder,
in Quackery jargon) that causes the compiler to
disregard everything until it encounters a ")"
preceded by whitespace.
If you require more than that, it is trivial to
define new comment builders... )
[ behead carriage = until ... |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #QB64 | QB64 | REM This is a remark...
' This is also a remark...
IF a = 0 THEN REM (REM follows syntax rules)
IF a = 0 THEN '(apostrophe doesn't follow syntax rules, so use END IF after this)
END IF
'Metacommands such as $DYNAMIC and $INCLUDE use the REM (or apostrophe).
REM $STATIC 'arrays cannot be resized once dimensioned.
RE... |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #R | R | # end of line comment |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #C.2B.2B | C++ | #ifndef MYWIDGET_H
#define MYWIDGET_H
#include <QWidget>
class QPaintEvent ;
class MyWidget : public QWidget {
public :
MyWidget( ) ;
protected :
void paintEvent( QPaintEvent * ) ;
private :
int width ;
int height ;
const int colornumber ;
} ;
#endif |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #COBOL | COBOL | IDENTIFICATION DIVISION.
PROGRAM-ID. terminal-colour-bars.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 width PIC 9(3).
01 height PIC 9(3).
01 interval PIC 9(3).
01 colours-area.
03 colour-values.
05 FI... |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #Wren | Wren | import "graphics" for Canvas, Color
import "dome" for Window
class Game {
static init() {
Window.title = "Color pinstripe"
__width = 900
__height = 600
Canvas.resize(__width, __height)
Window.resize(__width, __height)
var colors = [
Color.hex("000000"), ... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Delphi | Delphi | def combinations(m, range) {
return if (m <=> 0) { [[]] } else {
def combGenerator {
to iterate(f) {
for i in range {
for suffix in combinations(m.previous(), range & (int > i)) {
f(null, [i] + suffix)
}
}
}
}
}
} |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #MUMPS | MUMPS | IF A list-of-MUMPS-commands |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Racket | Racket |
; this is a to-end-of-line coment
#| balanced comment, #| can be nested |# |#
#;(this expression is ignored)
#; ; the following expression is commented because of the #; in the beginning
(ignored)
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Raku | Raku | # the answer to everything
my $x = 42; |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Common_Lisp | Common Lisp | (defun color-bars ()
(with-screen (scr :input-blocking t :input-echoing nil :cursor-visible nil)
(dotimes (i (height scr))
(move scr i 0)
(dolist (color '(:red :green :yellow :blue :magenta :cyan :white :black))
(add-char scr #\space :bgcolor color :n (floor (/ (width scr) 8)))))
(refresh ... |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #XPL0 | XPL0 | code ChIn=7, Point=41, SetVid=45;
int X, Y, W, C;
[SetVid($13); \set 320x200 graphics mode in 256 colors
for Y:= 0 to 200-1 do \for all the scan lines...
[W:= Y/50 + 1; \width of stripe = 1, 2, 3, 4
C:= 0; \set color to black so first pixel becomes b... |
http://rosettacode.org/wiki/Colour_pinstripe/Display | Colour pinstripe/Display | The task is to create 1 pixel wide coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.
The pinstripes should either follow the system palette sequence, or a sequence that includes:
black, red, green, blue, magenta, cyan, yellow, and ... | #Yabasic | Yabasic | w = 640 : h = 480
open window w, h
h4 = h/4
FOR I=1 TO 4
COLIDX=0
YTOP=(I-1)*h4
FOR X=1 TO w STEP I
IF mod(COLIDX, 8) = 0 RESTORE COLOURS
READ R,G,B
color R, G, B
fill rectangle X,YTOP,X+I,YTOP+h4
COLIDX = COLIDX + 1
NEXT
NEXT
label COLOURS
DATA 0,0,0
DATA 255... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #11l | 11l | [(() -> Int)] funcs
L(i) 10
funcs.append(() -> @=i * @=i)
print(funcs[3]()) |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #E | E | def combinations(m, range) {
return if (m <=> 0) { [[]] } else {
def combGenerator {
to iterate(f) {
for i in range {
for suffix in combinations(m.previous(), range & (int > i)) {
f(null, [i] + suffix)
}
}
}
}
}
} |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Nanoquery | Nanoquery | if x = 0
foo()
else if x = 1
bar()
else if x = 2
baz()
else
boz()
end |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Raven | Raven | # this is a comment |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #REBOL | REBOL |
; This is a line comment.
{ Multi-line strings can
be used as comments
if you like }
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Relation | Relation |
// This is a valid comment
// A space is needed after the double slash
|
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Delphi | Delphi |
unit Colour_barsDisplay;
interface
uses
Winapi.Windows, System.SysUtils, System.Classes, Vcl.Graphics, Vcl.Forms;
type
TfmColourBar = class(TForm)
procedure FormPaint(Sender: TObject);
procedure FormResize(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #Ada | Ada | with Ada.Text_IO;
procedure Value_Capture is
protected type Fun is -- declaration of the type of a protected object
entry Init(Index: Natural);
function Result return Natural;
private
N: Natural := 0;
end Fun;
protected body Fun is -- the implementation of a protected object
en... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #EasyLang | EasyLang | n = 5
m = 3
len result[] m
#
func combinations pos val . .
if pos < m
for i = val to n - m
result[pos] = pos + i
call combinations pos + 1 i
.
else
print result[]
.
.
call combinations 0 0 |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Nemerle | Nemerle | if (the_answer == 42) FindQuestion() else Foo();
when (stock.price < buy_order) stock.Buy();
unless (text < "") Write(text); |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Retro | Retro | ( comments are placed between parentheses. A space must follow the opening parenthesis. ) |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #REXX | REXX | /*REXX program that demonstrates what happens when dividing by zero. */
y=7
say 44 / (7-y) /* divide by some strange thingy.*/ |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #EasyLang | EasyLang | col[] = [ 000 900 090 909 099 990 999 ]
w = 100.0 / len col[]
for i range len col[]
color col[i]
move w * i 0
rect w 100
. |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Factor | Factor | USING: accessors colors.constants kernel math sequences ui
ui.gadgets ui.gadgets.tracks ui.pens.solid ;
IN: rosetta-code.colour-bars-display
: colors ( -- ) [
horizontal <track>
{
COLOR: black
COLOR: red
COLOR: green
COLOR: blue
COLOR: magenta
COLOR: cyan
COLOR: yellow
COLOR: white
}
[ <solid> gadget new swap... |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Forth | Forth |
\ Color Bars for TI-99 CAMEL99 Forth
NEEDS HCHAR FROM DSK1.GRAFIX \ TMS9918 control lexicon
NEEDS CHARSET FROM DSK1.CHARSET \ restores default character data
NEEDS ENUM FROM DSK1.ENUM \ add simple enumerator to Forth
\ Name TI-99 colors
1 ENUM CLR ENUM BLK ENUM MGRN ENUM LGRN
ENUM BLU ... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #ALGOL_68 | ALGOL 68 |
[1:10]PROC(BOOL)INT squares;
FOR i FROM 1 TO 10 DO
HEAP INT captured i := i;
squares[i] := ((REF INT by ref i, INT by val i,BOOL b)INT:(INT i = by ref i; (b|by ref i := 0); by val i*i))
(captured i, captured i,)
OD;
FOR i FROM 1 TO 8 DO print(squares[i](i MOD 2 = 0)) OD;
print(new ... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #EchoLisp | EchoLisp |
;;
;; using the native (combinations) function
(lib 'list)
(combinations (iota 5) 3)
→ ((0 1 2) (0 1 3) (0 1 4) (0 2 3) (0 2 4) (0 3 4) (1 2 3) (1 2 4) (1 3 4) (2 3 4))
;;
;; using an iterator
;;
(lib 'sequences)
(take (combinator (iota 5) 3) #:all)
→ ((0 1 2) (0 1 3) (0 1 4) (0 2 3) (0 2 4) (0 3 4) (1 2 3) (1 2 4) (... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #NetRexx | NetRexx | -- simple construct
if logicalCondition then conditionWasTrue()
else conditionWasFalse()
-- multi-line is ok too
if logicalCondition
then
conditionWasTrue()
else
conditionWasFalse()
-- using block stuctures
if logicalCondition then do
conditionWasTrue()
...
end
else do
conditionWasFa... |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Ring | Ring |
//this is a single line comment
#this also a single line comment!
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #RLaB | RLaB |
x = "code" # I am a comment
x = "code" // Here I comment thee
# matlab-like document line
// C++ like document line
|
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #FreeBASIC | FreeBASIC | ' FB 1.05.0 Win64
' Draw the color bars on an 80 x 25 console using the system palette of 16 colors
' i.e. 5 columns per color
Width 80, 25
Shell "cls"
Locate ,, 0 '' turn cursor off
For clr As UInteger = 0 To 15
Color 0, clr
For row As Integer = 1 to 25
Locate row, clr * 5 + 1
Print Space(5);
Next ro... |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Gambas | Gambas | Public Sub Form_Open()
Dim iColour As Integer[] = [Color.Black, Color.red, Color.Green, Color.Magenta, Color.Cyan, Color.Yellow, Color.white]
Dim hPanel As Panel
Dim siCount As Short
With Me
.Arrangement = Arrange.Horizontal
.Height = 300
.Width = 400
End With
For siCount = 0 To 6
hpanel = New Panel(Me)
h... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #AntLang | AntLang | fns: {n: x; {n expt 2}} map range[10]
(8 elem fns)[] |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #AppleScript | AppleScript | on run
set fns to {}
repeat with i from 1 to 10
set end of fns to closure(i)
end repeat
|λ|() of item 3 of fns
end run
on closure(x)
script
on |λ|()
x * x
end |λ|
end script
end closure |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Egison | Egison |
(define $comb
(lambda [$n $xs]
(match-all xs (list integer)
[(loop $i [1 ,n] <join _ <cons $a_i ...>> _) a])))
(test (comb 3 (between 0 4)))
|
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #newLISP | newLISP | (set 'x 1)
(if (= x 1) (println "is 1")) |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Robotic | Robotic |
. "This is a comment line"
. "Print Hello world"
* "Hello world."
. "This is the only way to comment a line in Robotic"
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Ruby | Ruby | x = "code" # I am a comment
=begin hello
I a POD documentation comment like Perl
=end puts "code" |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Run_BASIC | Run BASIC | 'This is a comment
REM This is a comment
print "Notice comment at the end of the line." 'This is a comment
print "Also notice this comment at the end of the line." : REM This is a comment
|
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Go | Go | package main
import "github.com/fogleman/gg"
var colors = [8]string{
"000000", // black
"FF0000", // red
"00FF00", // green
"0000FF", // blue
"FF00FF", // magenta
"00FFFF", // cyan
"FFFF00", // yellow
"FFFFFF", // white
}
func drawBars(dc *gg.Context) {
w := float64(dc.Width() ... |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Haskell | Haskell | #!/usr/bin/env stack
-- stack --resolver lts-7.0 --install-ghc runghc --package vty -- -threaded
import Graphics.Vty
colorBars :: Int -> [(Int, Attr)] -> Image
colorBars h bars = horizCat $ map colorBar bars
where colorBar (w, attr) = charFill attr ' ' w h
barWidths :: Int -> Int -> [Int]
barWidths nBars totalW... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #Axiom | Axiom | )abbrev package TESTP TestPackage
TestPackage() : with
test: () -> List((()->Integer))
== add
test() == [(() +-> i^2) for i in 1..10] |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #Babel | Babel | ((main {
{ iter
1 take bons 1 take
dup cp
{*} cp
3 take
append }
10 times
collect !
{eval %d nl <<} each })) |
http://rosettacode.org/wiki/Circular_primes | Circular primes | Definitions
A circular prime is a prime number with the property that the number generated at each intermediate step when cyclically permuting its (base 10) digits will also be prime.
For example:
1193 is a circular prime, since 1931, 9311 and 3119 are all also prime.
Note that a number which is a cyclic permutation ... | #ALGOL_68 | ALGOL 68 | BEGIN # find circular primes - primes where all cyclic permutations #
# of the digits are also prime #
# genertes a sieve of circular primes, only the first #
# permutation of each prime is flagged as TRUE #
OP CIRCULARPRIMESIEVE = ( INT ... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Eiffel | Eiffel |
class
COMBINATIONS
create
make
feature
make (n, k: INTEGER)
require
n_positive: n > 0
k_positive: k > 0
k_smaller_equal: k <= n
do
create set.make
set.extend ("")
create sol.make
sol := solve (set, k, n - k)
sol := convert_solution (n, sol)
ensure
correct_num_of_sol: num_of... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Nim | Nim | if x == 0:
foo()
elif x == 1:
bar()
elif x == 2:
baz()
else:
boz() |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Rust | Rust | // A single line comment
/*
This is a multi-line (aka block) comment
/*
containing nested multi-line comment
(nesting supported since 0.9-pre https://github.com/mozilla/rust/issues/9468)
*/
*/
/// Outer single line Rustdoc comments apply to the next item.
/**
Outer multi-line R... |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #SAS | SAS | /* comment */
*another comment;
* both
may
be
multiline; |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Sather | Sather | -- a single line comment |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Icon_and_Unicon | Icon and Unicon | link graphics,printf
procedure main() # generalized colour bars
DrawTestCard(Simple_TestCard())
WDone()
end
procedure DrawTestCard(TC)
size := sprintf("size=%d,%d",TC.width,TC.height)
&window := TC.window := open(TC.id,"g","bg=black",size) |
stop("Unable to open window")
eve... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #Bracmat | Bracmat | ( -1:?i
& :?funcs
& whl
' ( 1+!i:<10:?i
& !funcs ()'(.$i^2):?funcs
)
& whl'(!funcs:%?func %?funcs&out$(!func$))
);
|
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #C | C | #include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/mman.h>
typedef int (*f_int)();
#define TAG 0xdeadbeef
int _tmpl() {
volatile int x = TAG;
return x * x;
}
#define PROT (PROT_EXEC | PROT_WRITE)
#define FLAGS (MAP_PRIVATE | MAP_ANONYMOUS)
f_int dupf(int v)
{
size_t len = (void*)dupf - ... |
http://rosettacode.org/wiki/Circular_primes | Circular primes | Definitions
A circular prime is a prime number with the property that the number generated at each intermediate step when cyclically permuting its (base 10) digits will also be prime.
For example:
1193 is a circular prime, since 1931, 9311 and 3119 are all also prime.
Note that a number which is a cyclic permutation ... | #ALGOL_W | ALGOL W | begin % find circular primes - primes where all cyclic permutations %
% of the digits are also prime %
% sets p( 1 :: n ) to a sieve of primes up to n %
procedure Eratosthenes ( logical array p( * ) ; integer value n ) ;
begin
p( 1 ) := false; p( 2 ) := true;
... |
http://rosettacode.org/wiki/Circular_primes | Circular primes | Definitions
A circular prime is a prime number with the property that the number generated at each intermediate step when cyclically permuting its (base 10) digits will also be prime.
For example:
1193 is a circular prime, since 1931, 9311 and 3119 are all also prime.
Note that a number which is a cyclic permutation ... | #Arturo | Arturo | perms: function [n][
str: repeat to :string n 2
result: new []
lim: dec size digits n
loop 0..lim 'd ->
'result ++ slice str d lim+d
return to [:integer] result
]
circulars: new []
circular?: function [x][
if not? prime? x -> return false
loop perms x 'y [
if not? pri... |
http://rosettacode.org/wiki/Collections | Collections | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Collections are abstractions to represent sets of values.
In statically-typed languages, the values are typically of a common data type.
Task
Create a collection, and add a fe... | #11l | 11l | dc.l TrapString_Bus
dc.l TrapString_Addr
dc.l TrapString_Illegal
dc.l TrapString_Div0
dc.l TrapString_chk
dc.l TrapString_v
dc.l TrapString_priv
dc.l TrapString_trace
TrapString_Bus:
dc.b "Bus error",255
even
TrapString_Addr:
dc.b "Address error",255
even
TrapString_Illegal:
dc.b "Illegal Instruction",25... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Elena | Elena | import system'routines;
import extensions;
import extensions'routines;
const int M = 3;
const int N = 5;
Numbers(n)
{
^ Array.allocate(n).populate:(int n => n)
}
public program()
{
var numbers := Numbers(N);
Combinator.new(M, numbers).forEach:(row)
{
console.printLine(row.toString())
... |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Objeck | Objeck |
a := GetValue();
if(a < 5) {
"less than 5"->PrintLine();
}
else if(a > 5) {
"greater than 5"->PrintLine();
}
else {
"equal to 5"->PrintLine();
};
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Scala | Scala | // A single line comment
/* A multi-line
comment */ |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Scheme | Scheme | ; Basically the same as Common Lisp
; While R5RS does not provide block comments, they are defined in SRFI-30, as in Common Lisp :
#| comment
... #| nested comment
... |#
|#
; See http://srfi.schemers.org/srfi-30/srfi-30.html
|
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Scilab | Scilab | // this is a comment
i=i+1 // this is a comment |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #J | J | load 'viewmat'
size=: 2{.".wd'qm' NB. J6
size=: getscreenwh_jgtk_ '' NB. J7
'rgb'viewmat (|.size){. (>.&.(%&160)|.size)$ 20# 256#.255*#:i.8 |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Java | Java |
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
public class ColorFrame extends JFrame {
public ColorFrame(int width, int height) {
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setSize(width, height);
this.setVisible(true);
}
@Override
public void paint(Graphics g) {
... |
http://rosettacode.org/wiki/Closures/Value_capture | Closures/Value capture | Task
Create a list of ten functions, in the simplest manner possible (anonymous functions are encouraged), such that the function at index i (you may choose to start i from either 0 or 1), when run, should return the square of the index, that is, i 2.
Display the result of runnin... | #C.23 | C# | using System;
using System.Linq;
class Program
{
static void Main()
{
var captor = (Func<int, Func<int>>)(number => () => number * number);
var functions = Enumerable.Range(0, 10).Select(captor);
foreach (var function in functions.Take(9))
{
Console.WriteLine(functi... |
http://rosettacode.org/wiki/Circular_primes | Circular primes | Definitions
A circular prime is a prime number with the property that the number generated at each intermediate step when cyclically permuting its (base 10) digits will also be prime.
For example:
1193 is a circular prime, since 1931, 9311 and 3119 are all also prime.
Note that a number which is a cyclic permutation ... | #AWK | AWK |
# syntax: GAWK -f CIRCULAR_PRIMES.AWK
BEGIN {
p = 2
printf("first 19 circular primes:")
for (count=0; count<19; p++) {
if (is_circular_prime(p)) {
printf(" %d",p)
count++
}
}
printf("\n")
exit(0)
}
function cycle(n, m,p) { # E.G. if n = 1234 returns 2341
m = n
... |
http://rosettacode.org/wiki/Collections | Collections | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Collections are abstractions to represent sets of values.
In statically-typed languages, the values are typically of a common data type.
Task
Create a collection, and add a fe... | #68000_Assembly | 68000 Assembly | dc.l TrapString_Bus
dc.l TrapString_Addr
dc.l TrapString_Illegal
dc.l TrapString_Div0
dc.l TrapString_chk
dc.l TrapString_v
dc.l TrapString_priv
dc.l TrapString_trace
TrapString_Bus:
dc.b "Bus error",255
even
TrapString_Addr:
dc.b "Address error",255
even
TrapString_Illegal:
dc.b "Illegal Instruction",25... |
http://rosettacode.org/wiki/Combinations | Combinations | Task
Given non-negative integers m and n, generate all size m combinations of the integers from 0 (zero) to n-1 in sorted order (each combination is sorted and the entire table is sorted).
Example
3 comb 5 is:
0 1 2
0 1 3
0 1 4
0 2 3
0 2 4
0 3 4
1 2 3
1 2 4
1 3 4
2 3 4
... | #Elixir | Elixir | defmodule RC do
def comb(0, _), do: [[]]
def comb(_, []), do: []
def comb(m, [h|t]) do
(for l <- comb(m-1, t), do: [h|l]) ++ comb(m, t)
end
end
{m, n} = {3, 5}
list = for i <- 1..n, do: i
Enum.each(RC.comb(m, list), fn x -> IO.inspect x end) |
http://rosettacode.org/wiki/Conditional_structures | Conditional structures | Control Structures
These are examples of control structures. You may also be interested in:
Conditional structures
Exceptions
Flow-control structures
Loops
Task
List the conditional structures offered by a programming language. See Wikipedia: conditionals for descriptions.
Common conditional structures include ... | #Object_Pascal | Object Pascal | let condition = true
if condition then
1 (* evaluate something *)
else
2 (* evaluate something *) |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #sed | sed | # a single line comment |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #Seed7 | Seed7 | # A single line comment
(* A multi-line
comment *)
(* In Seed7,
(* comments can be nested. *) *) |
http://rosettacode.org/wiki/Comments | Comments | Task
Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.
Related tasks
Documentation
Here_document
See also
Wikipedia
xkcd (Humor: hand gesture denoting // for "commenting out" people.)
| #SenseTalk | SenseTalk |
# Hashtag is a comment
-- Dash dash is another comment
// Slash slash is yet another comment
— Alt/Option + Underscore creates an m-dash comment
(* Parentheses and star is used for commenting
blocks of code (* and can be nested *) *)
set foo to true // all comments can append to statements
|
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Julia | Julia | using Images
colors = [colorant"black", colorant"red", colorant"green", colorant"darkblue",
colorant"purple", colorant"blue", colorant"yellow", colorant"white"]
wcol = 60 # width of each color bar
h, w = 150, wcol * length(colors) + 1
img = Matrix{RGB{N0f8}}(h, w);
for (j, col) in zip(1:wcol:w, colors)
... |
http://rosettacode.org/wiki/Colour_bars/Display | Colour bars/Display | Task
Display a series of vertical color bars across the width of the display.
The color bars should either use:
the system palette, or
the sequence of colors:
black
red
green
blue
magenta
cyan
yellow
white
| #Kotlin | Kotlin | import java.awt.Color
import java.awt.Graphics
import javax.swing.JFrame
class ColorFrame(width: Int, height: Int): JFrame() {
init {
defaultCloseOperation = EXIT_ON_CLOSE
setSize(width, height)
isVisible = true
}
override fun paint(g: Graphics) {
val colors = listOf(Colo... |
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