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doc: note that @-pattern is accessible in default values #11672

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doc: note that @-pattern is accessible in default values #11672

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a780ce4
doc: note that @-pattern is accessible in default values
fricklerhandwerk Oct 10, 2024
8416960
technically correct terminology
fricklerhandwerk Oct 11, 2024
a2fd23f
Update doc/manual/src/language/syntax.md
fricklerhandwerk Oct 11, 2024
e102ff7
Update doc/manual/src/language/syntax.md
Mic92 Oct 22, 2024
ebb3243
split general description and text related to the example
fricklerhandwerk Oct 30, 2024
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17 changes: 17 additions & 0 deletions doc/manual/src/language/syntax.md
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Expand Up @@ -503,6 +503,23 @@ three kinds of patterns:
> [ 23 {} ]
> ```

The complete function argument denoted as an `@`-pattern can be accessed inside default values.
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> **Example**
>
> ```nix
> let
> f = args@{ x ? args.a, ... }: x;
> in
> f { a = 1; }
> ```
>
> evaluates to
>
> ```nix
> 1
> ```

Note that functions do not have names. If you want to give them a name,
you can bind them to an attribute, e.g.,

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