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# copyloopvar
copyloopvar is a linter detects places where loop variables are copied.
cf. [Fixing For Loops in Go 1.22](https://go.dev/blog/loopvar-preview)
## Example
```go
for i, v := range []int{1, 2, 3} {
i := i // The copy of the 'for' variable "i" can be deleted (Go 1.22+)
v := v // The copy of the 'for' variable "v" can be deleted (Go 1.22+)
_, _ = i, v
}
for i := 1; i <= 3; i++ {
i := i // The copy of the 'for' variable "i" can be deleted (Go 1.22+)
_ = i
}
```
## Install
```bash
go install github.com/karamaru-alpha/copyloopvar/cmd/copyloopvar@latest
go vet -vettool=`which copyloopvar` ./...
```
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