codekingpro/portable-devtools

1// Copyright 2023 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4 5package maps_test6 7import (8	"fmt"9	"maps"10	"slices"11	"strings"12)13 14func ExampleClone() {15	m1 := map[string]int{16		"key": 1,17	}18	m2 := maps.Clone(m1)19	m2["key"] = 10020	fmt.Println(m1["key"])21	fmt.Println(m2["key"])22 23	m3 := map[string][]int{24		"key": {1, 2, 3},25	}26	m4 := maps.Clone(m3)27	fmt.Println(m4["key"][0])28	m4["key"][0] = 10029	fmt.Println(m3["key"][0])30	fmt.Println(m4["key"][0])31 32	// Output:33	// 134	// 10035	// 136	// 10037	// 10038}39 40func ExampleCopy() {41	m1 := map[string]int{42		"one": 1,43		"two": 2,44	}45	m2 := map[string]int{46		"one": 10,47	}48 49	maps.Copy(m2, m1)50	fmt.Println("m2 is:", m2)51 52	m2["one"] = 10053	fmt.Println("m1 is:", m1)54	fmt.Println("m2 is:", m2)55 56	m3 := map[string][]int{57		"one": {1, 2, 3},58		"two": {4, 5, 6},59	}60	m4 := map[string][]int{61		"one": {7, 8, 9},62	}63 64	maps.Copy(m4, m3)65	fmt.Println("m4 is:", m4)66 67	m4["one"][0] = 10068	fmt.Println("m3 is:", m3)69	fmt.Println("m4 is:", m4)70 71	// Output:72	// m2 is: map[one:1 two:2]73	// m1 is: map[one:1 two:2]74	// m2 is: map[one:100 two:2]75	// m4 is: map[one:[1 2 3] two:[4 5 6]]76	// m3 is: map[one:[100 2 3] two:[4 5 6]]77	// m4 is: map[one:[100 2 3] two:[4 5 6]]78}79 80func ExampleDeleteFunc() {81	m := map[string]int{82		"one":   1,83		"two":   2,84		"three": 3,85		"four":  4,86	}87	maps.DeleteFunc(m, func(k string, v int) bool {88		return v%2 != 0 // delete odd values89	})90	fmt.Println(m)91	// Output:92	// map[four:4 two:2]93}94 95func ExampleEqual() {96	m1 := map[int]string{97		1:    "one",98		10:   "Ten",99		1000: "THOUSAND",100	}101	m2 := map[int]string{102		1:    "one",103		10:   "Ten",104		1000: "THOUSAND",105	}106	m3 := map[int]string{107		1:    "one",108		10:   "ten",109		1000: "thousand",110	}111 112	fmt.Println(maps.Equal(m1, m2))113	fmt.Println(maps.Equal(m1, m3))114	// Output:115	// true116	// false117}118 119func ExampleEqualFunc() {120	m1 := map[int]string{121		1:    "one",122		10:   "Ten",123		1000: "THOUSAND",124	}125	m2 := map[int][]byte{126		1:    []byte("One"),127		10:   []byte("Ten"),128		1000: []byte("Thousand"),129	}130	eq := maps.EqualFunc(m1, m2, func(v1 string, v2 []byte) bool {131		return strings.EqualFold(v1, string(v2))132	})133	fmt.Println(eq)134	// Output:135	// true136}137 138func ExampleAll() {139	m1 := map[string]int{140		"one": 1,141		"two": 2,142	}143	m2 := map[string]int{144		"one": 10,145	}146	maps.Insert(m2, maps.All(m1))147	fmt.Println("m2 is:", m2)148	// Output:149	// m2 is: map[one:1 two:2]150}151 152func ExampleKeys() {153	m1 := map[int]string{154		1:    "one",155		10:   "Ten",156		1000: "THOUSAND",157	}158	keys := slices.Sorted(maps.Keys(m1))159	fmt.Println(keys)160	// Output:161	// [1 10 1000]162}163 164func ExampleValues() {165	m1 := map[int]string{166		1:    "one",167		10:   "Ten",168		1000: "THOUSAND",169	}170	values := slices.Sorted(maps.Values(m1))171	fmt.Println(values)172	// Output:173	// [THOUSAND Ten one]174}175 176func ExampleInsert() {177	m1 := map[int]string{178		1000: "THOUSAND",179	}180	s1 := []string{"zero", "one", "two", "three"}181	maps.Insert(m1, slices.All(s1))182	fmt.Println("m1 is:", m1)183	// Output:184	// m1 is: map[0:zero 1:one 2:two 3:three 1000:THOUSAND]185}186 187func ExampleCollect() {188	s1 := []string{"zero", "one", "two", "three"}189	m1 := maps.Collect(slices.All(s1))190	fmt.Println("m1 is:", m1)191	// Output:192	// m1 is: map[0:zero 1:one 2:two 3:three]193}194