File size: 2,949 Bytes
e36aeda | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | // Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ring_test
import (
"container/ring"
"fmt"
)
func ExampleRing_Len() {
// Create a new ring of size 4
r := ring.New(4)
// Print out its length
fmt.Println(r.Len())
// Output:
// 4
}
func ExampleRing_Next() {
// Create a new ring of size 5
r := ring.New(5)
// Get the length of the ring
n := r.Len()
// Initialize the ring with some integer values
for i := 0; i < n; i++ {
r.Value = i
r = r.Next()
}
// Iterate through the ring and print its contents
for j := 0; j < n; j++ {
fmt.Println(r.Value)
r = r.Next()
}
// Output:
// 0
// 1
// 2
// 3
// 4
}
func ExampleRing_Prev() {
// Create a new ring of size 5
r := ring.New(5)
// Get the length of the ring
n := r.Len()
// Initialize the ring with some integer values
for i := 0; i < n; i++ {
r.Value = i
r = r.Next()
}
// Iterate through the ring backwards and print its contents
for j := 0; j < n; j++ {
r = r.Prev()
fmt.Println(r.Value)
}
// Output:
// 4
// 3
// 2
// 1
// 0
}
func ExampleRing_Do() {
// Create a new ring of size 5
r := ring.New(5)
// Get the length of the ring
n := r.Len()
// Initialize the ring with some integer values
for i := 0; i < n; i++ {
r.Value = i
r = r.Next()
}
// Iterate through the ring and print its contents
r.Do(func(p any) {
fmt.Println(p.(int))
})
// Output:
// 0
// 1
// 2
// 3
// 4
}
func ExampleRing_Move() {
// Create a new ring of size 5
r := ring.New(5)
// Get the length of the ring
n := r.Len()
// Initialize the ring with some integer values
for i := 0; i < n; i++ {
r.Value = i
r = r.Next()
}
// Move the pointer forward by three steps
r = r.Move(3)
// Iterate through the ring and print its contents
r.Do(func(p any) {
fmt.Println(p.(int))
})
// Output:
// 3
// 4
// 0
// 1
// 2
}
func ExampleRing_Link() {
// Create two rings, r and s, of size 2
r := ring.New(2)
s := ring.New(2)
// Get the length of the ring
lr := r.Len()
ls := s.Len()
// Initialize r with 0s
for i := 0; i < lr; i++ {
r.Value = 0
r = r.Next()
}
// Initialize s with 1s
for j := 0; j < ls; j++ {
s.Value = 1
s = s.Next()
}
// Link ring r and ring s
rs := r.Link(s)
// Iterate through the combined ring and print its contents
rs.Do(func(p any) {
fmt.Println(p.(int))
})
// Output:
// 0
// 0
// 1
// 1
}
func ExampleRing_Unlink() {
// Create a new ring of size 6
r := ring.New(6)
// Get the length of the ring
n := r.Len()
// Initialize the ring with some integer values
for i := 0; i < n; i++ {
r.Value = i
r = r.Next()
}
// Unlink three elements from r, starting from r.Next()
r.Unlink(3)
// Iterate through the remaining ring and print its contents
r.Do(func(p any) {
fmt.Println(p.(int))
})
// Output:
// 0
// 4
// 5
}
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