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rails guide for Pathname#existence

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Timo Schilling 2021-11-25 20:18:03 +00:00 committed by GitHub
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guides/source/active_support_core_extensions.md
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@ -4055,3 +4055,18 @@ end
NOTE: Defined in `active_support/core_ext/load_error.rb`.
[LoadError#is_missing?]: https://api.rubyonrails.org/classes/LoadError.html#method-i-is_missing-3F
Extensions to Pathname
-------------------------
### `existence`
The [`existence`][Pathname#existence] method returns the receiver if the named file exists otherwise returns +nil+. It is useful for idioms like this:
```ruby
content = Pathname.new("file").existence&.read
```
NOTE: Defined in `active_support/core_ext/pathname/existence.rb`.
[Pathname#existence]: https://api.rubyonrails.org/classes/Pathname.html#method-i-existence