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Add math.Counter example to warnf

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Joe Mooring 2023-12-07 07:05:36 -08:00 committed by Joe Mooring
parent 8ed9cdaa94
commit 315d2f8c34
1 changed files with 11 additions and 0 deletions
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content/en/functions/fmt/Warnf.md
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@ -20,3 +20,14 @@ The `warnf` function evaluates the format string, then prints the result to the
```go-html-template ```go-html-template
{{ warnf "The %q shortcode was unable to find %s. See %s" .Name $file .Position }} {{ warnf "The %q shortcode was unable to find %s. See %s" .Name $file .Position }}
``` ```
To prevent supression of duplicate messages when using `warnf` for debugging, make each message unique with the [`math.Counter`] function. For example:
```go-html-template
{{ range site.RegularPages }}
{{ .Section | warnf "%#[2]v [%[1]d]" math.Counter }}
{{ end }}
```
[`math.Counter`]: /functions/math/counter