| // run |
| |
| // Copyright 2020 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 main |
| |
| import ( |
| "log" |
| "strconv" |
| ) |
| |
| func FromStrings3[T any](s []string, set func(*T, string)) []T { |
| results := make([]T, len(s)) |
| for i, v := range s { |
| set(&results[i], v) |
| } |
| return results |
| } |
| |
| type Settable int |
| |
| func (p *Settable) Set(s string) { |
| i, err := strconv.Atoi(s) |
| if err != nil { |
| log.Fatal(err) |
| } |
| *p = Settable(i) |
| } |
| |
| func main() { |
| s := FromStrings3[Settable]([]string{"1"}, |
| func(p *Settable, s string) { p.Set(s) }) |
| if len(s) != 1 || s[0] != 1 { |
| log.Fatalf("got %v, want %v", s, []int{1}) |
| } |
| } |