diff options
| -rw-r--r-- | doc/manual/expressions/builtins.xml | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml index 615314880aba..5e88b88561fc 100644 --- a/doc/manual/expressions/builtins.xml +++ b/doc/manual/expressions/builtins.xml @@ -264,13 +264,13 @@ stdenv.mkDerivation { … } Note that when obtaining the hash with <varname>nix-prefetch-url </varname> the option <varname>--unpack</varname> is required. - </para> - - <para>This function can also verify the contents against a hash. - In that case, the function takes a set instead of a URL. The set + </para> + + <para>This function can also verify the contents against a hash. + In that case, the function takes a set instead of a URL. The set requires the attribute <varname>url</varname> and the attribute <varname>sha256</varname>, e.g. - + <programlisting> with import (fetchTarball { url = https://github.com/NixOS/nixpkgs-channels/archive/nixos-14.12.tar.gz; @@ -279,7 +279,7 @@ with import (fetchTarball { stdenv.mkDerivation { … } </programlisting> - + </para> <para>This function is not available if <link @@ -600,6 +600,16 @@ x: x + 456</programlisting> </varlistentry> + <varlistentry><term><function>builtins.isFloat</function> + <replaceable>e</replaceable></term> + + <listitem><para>Return <literal>true</literal> if + <replaceable>e</replaceable> evaluates to a float, and + <literal>false</literal> otherwise.</para></listitem> + + </varlistentry> + + <varlistentry><term><function>builtins.isBool</function> <replaceable>e</replaceable></term> @@ -1245,8 +1255,9 @@ stdenv.mkDerivation (rec { <replaceable>e</replaceable>, namely <literal>"int"</literal>, <literal>"bool"</literal>, <literal>"string"</literal>, <literal>"path"</literal>, <literal>"null"</literal>, - <literal>"set"</literal>, <literal>"list"</literal> or - <literal>"lambda"</literal>.</para></listitem> + <literal>"set"</literal>, <literal>"list"</literal>, + <literal>"lambda"</literal> or + <literal>"float"</literal>.</para></listitem> </varlistentry> |