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Diffstat (limited to 'doc/manual/expressions')
| -rw-r--r-- | doc/manual/expressions/builtins.xml | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml index 6bdfdd55c4b6..0b11e2f5a5c6 100644 --- a/doc/manual/expressions/builtins.xml +++ b/doc/manual/expressions/builtins.xml @@ -313,6 +313,19 @@ stdenv.mkDerivation { </varlistentry> + <varlistentry><term><function>builtins.foldl’</function> + <replaceable>op</replaceable> <replaceable>nul</replaceable> <replaceable>list</replaceable></term> + + <listitem><para>Reduce a list by applying a binary operator, from + left to right, e.g. <literal>foldl’ op nul [x0 x1 x2 ...] = op (op + (op nul x0) x1) x2) ...</literal>. The operator is applied + strictly, i.e., its arguments are evaluated first. For example, + <literal>foldl’ (x: y: x + y) 0 [1 2 3]</literal> evaluates to + 6.</para></listitem> + + </varlistentry> + + <varlistentry><term><function>builtins.fromJSON</function> <replaceable>e</replaceable></term> <listitem><para>Convert a JSON string to a Nix |