diff options
| -rw-r--r-- | doc/manual/writing-nix-expressions.xml | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/doc/manual/writing-nix-expressions.xml b/doc/manual/writing-nix-expressions.xml index 5585e89fe..6db2adcfa 100644 --- a/doc/manual/writing-nix-expressions.xml +++ b/doc/manual/writing-nix-expressions.xml @@ -1060,15 +1060,14 @@ map (concat "foo") [ "bar" "bla" "abc" ]</programlisting> and <varname>z</varname>.</para></listitem> - <listitem><para>An <literal>@</literal>-pattern requires that the - argument matches with the patterns on the left- and right-hand side - of the <literal>@</literal>-sign. For example: + <listitem><para>An <literal>@</literal>-pattern provides a means of referring + to the whole value being matched: <programlisting> args@{ x, y, z, ... }: z + y + x + args.a</programlisting> Here <varname>args</varname> is bound to the entire argument, which - is further matches against the pattern <literal>{ x, y, z, + is further matched against the pattern <literal>{ x, y, z, ... }</literal>.</para></listitem> |