Datasets:
gadams
/
ruby

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Community
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444
# good
validates :name, presence: true, length: { within: 1..10 }
end
----
=== Space in Method Calls [[parens-no-spaces]]
Do not put a space between a method name and the opening parenthesis.
[source,ruby]
----
# bad
puts (x + y)
# good
puts(x + y)
----
=== Space in Brackets Access
Do not put a space between a receiver name and the opening brackets.
[source,ruby]
----
# bad
collection [index_or_key]
# good
collection[index_or_key]
----
=== Multi-line Arrays Alignment [[align-multiline-arrays]]
Align the elements of array literals spanning multiple lines.
[source,ruby]
----
# bad - single indent
menu_item = %w[Spam Spam Spam Spam Spam Spam Spam Spam
Baked beans Spam Spam Spam Spam Spam]
# good
menu_item = %w[
Spam Spam Spam Spam Spam Spam Spam Spam
Baked beans Spam Spam Spam Spam Spam
]
# good
menu_item =
%w[Spam Spam Spam Spam Spam Spam Spam Spam
Baked beans Spam Spam Spam Spam Spam]
----
== Naming Conventions
[quote, Phil Karlton]
____
The only real difficulties in programming are cache invalidation and naming things.
____
=== English for Identifiers [[english-identifiers]]
Name identifiers in English.
[source,ruby]
----
# bad - identifier is a Bulgarian word, using non-ascii (Cyrillic) characters
заплата = 1_000
# bad - identifier is a Bulgarian word, written with Latin letters (instead of Cyrillic)
zaplata = 1_000
# good
salary = 1_000
----
=== Snake Case for Symbols, Methods and Variables [[snake-case-symbols-methods-vars]]
Use `snake_case` for symbols, methods and variables.
[source,ruby]
----
# bad
:'some symbol'
:SomeSymbol
:someSymbol
someVar = 5
def someMethod
# some code
end
def SomeMethod
# some code
end
# good
:some_symbol