| // Copyright 2025 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 maprange defines an Analyzer that checks for redundant use |
| // of the functions maps.Keys and maps.Values in "for" statements with |
| // "range" clauses. |
| // |
| // # Analyzer maprange |
| // |
| // maprange: checks for unnecessary calls to maps.Keys and maps.Values in range statements |
| // |
| // Consider a loop written like this: |
| // |
| // for val := range maps.Values(m) { |
| // fmt.Println(val) |
| // } |
| // |
| // This should instead be written without the call to maps.Values: |
| // |
| // for _, val := range m { |
| // fmt.Println(val) |
| // } |
| // |
| // golang.org/x/exp/maps returns slices for Keys/Values instead of iterators, |
| // but unnecessary calls should similarly be removed: |
| // |
| // for _, key := range maps.Keys(m) { |
| // fmt.Println(key) |
| // } |
| // |
| // should be rewritten as: |
| // |
| // for key := range m { |
| // fmt.Println(key) |
| // } |
| package maprange |
