wehub-resource-sync
40 lines
1.2 KiB
Go
40 lines
1.2 KiB
Go
/*
|
|
* Copyright 2024 CloudWeGo Authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package gslice
|
|
|
|
// ToMap collects elements of slice to map, both map keys and values are produced
|
|
// by mapping function f.
|
|
//
|
|
// 🚀 EXAMPLE:
|
|
//
|
|
// type Foo struct {
|
|
// ID int
|
|
// Name string
|
|
// }
|
|
// mapper := func(f Foo) (int, string) { return f.ID, f.Name }
|
|
// ToMap([]Foo{}, mapper) ⏩ map[int]string{}
|
|
// s := []Foo{{1, "one"}, {2, "two"}, {3, "three"}}
|
|
// ToMap(s, mapper) ⏩ map[int]string{1: "one", 2: "two", 3: "three"}
|
|
func ToMap[T, V any, K comparable](s []T, f func(T) (K, V)) map[K]V {
|
|
m := make(map[K]V, len(s))
|
|
for _, e := range s {
|
|
k, v := f(e)
|
|
m[k] = v
|
|
}
|
|
return m
|
|
}
|