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// Copyright 2023 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 maps_test
import (
"fmt"
"maps"
"strings"
)
func ExampleClone() {
m1 := map[string]int{
"key": 1,
}
m2 := maps.Clone(m1)
m2["key"] = 100
fmt.Println(m1["key"])
fmt.Println(m2["key"])
m3 := map[string][]int{
"key": {1, 2, 3},
}
m4 := maps.Clone(m3)
fmt.Println(m4["key"][0])
m4["key"][0] = 100
fmt.Println(m3["key"][0])
fmt.Println(m4["key"][0])
// Output:
// 1
// 100
// 1
// 100
// 100
}
func ExampleCopy() {
m1 := map[string]int{
"one": 1,
"two": 2,
}
m2 := map[string]int{
"one": 10,
}
maps.Copy(m2, m1)
fmt.Println("m2 is:", m2)
m2["one"] = 100
fmt.Println("m1 is:", m1)
fmt.Println("m2 is:", m2)
m3 := map[string][]int{
"one": {1, 2, 3},
"two": {4, 5, 6},
}
m4 := map[string][]int{
"one": {7, 8, 9},
}
maps.Copy(m4, m3)
fmt.Println("m4 is:", m4)
m4["one"][0] = 100
fmt.Println("m3 is:", m3)
fmt.Println("m4 is:", m4)
// Output:
// m2 is: map[one:1 two:2]
// m1 is: map[one:1 two:2]
// m2 is: map[one:100 two:2]
// m4 is: map[one:[1 2 3] two:[4 5 6]]
// m3 is: map[one:[100 2 3] two:[4 5 6]]
// m4 is: map[one:[100 2 3] two:[4 5 6]]
}
func ExampleDeleteFunc() {
m := map[string]int{
"one": 1,
"two": 2,
"three": 3,
"four": 4,
}
maps.DeleteFunc(m, func(k string, v int) bool {
return v%2 != 0 // delete odd values
})
fmt.Println(m)
// Output:
// map[four:4 two:2]
}
func ExampleEqual() {
m1 := map[int]string{
1: "one",
10: "Ten",
1000: "THOUSAND",
}
m2 := map[int]string{
1: "one",
10: "Ten",
1000: "THOUSAND",
}
m3 := map[int]string{
1: "one",
10: "ten",
1000: "thousand",
}
fmt.Println(maps.Equal(m1, m2))
fmt.Println(maps.Equal(m1, m3))
// Output:
// true
// false
}
func ExampleEqualFunc() {
m1 := map[int]string{
1: "one",
10: "Ten",
1000: "THOUSAND",
}
m2 := map[int][]byte{
1: []byte("One"),
10: []byte("Ten"),
1000: []byte("Thousand"),
}
eq := maps.EqualFunc(m1, m2, func(v1 string, v2 []byte) bool {
return strings.ToLower(v1) == strings.ToLower(string(v2))
})
fmt.Println(eq)
// Output:
// true
}