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| author | Eelco Dolstra <edolstra@gmail.com> | 2017-08-16T19·21+0200 |
|---|---|---|
| committer | Eelco Dolstra <edolstra@gmail.com> | 2017-08-16T19·21+0200 |
| commit | 2ee1b9359b26e0d75c0ee885549fee4ad87131d1 (patch) | |
| tree | a7b100e984fafb09238dcb5fe8277011cbc1ca56 /doc/manual/expressions | |
| parent | c2cab207320672fb6ed4af40a99fc9082ff55234 (diff) | |
| parent | b8867a0239b1930a16f9ef3f7f3e864b01416dff (diff) | |
Merge branch 'tokenize' of https://github.com/nbp/nix
Diffstat (limited to 'doc/manual/expressions')
| -rw-r--r-- | doc/manual/expressions/builtins.xml | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml index 86c36da1b3..615314880a 100644 --- a/doc/manual/expressions/builtins.xml +++ b/doc/manual/expressions/builtins.xml @@ -873,6 +873,43 @@ builtins.sort builtins.lessThan [ 483 249 526 147 42 77 ] </varlistentry> + <varlistentry><term><function>builtins.split</function> + <replaceable>regex</replaceable> <replaceable>str</replaceable></term> + + <listitem><para>Returns a list composed of non matched strings interleaved + with the lists of the <link + xlink:href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04">extended + POSIX regular expression</link> <replaceable>regex</replaceable> matches + of <replaceable>str</replaceable>. Each item in the lists of matched + sequences is a regex group. + +<programlisting> +builtins.split "(a)b" "abc" +</programlisting> + +Evaluates to <literal>[ "" [ "a" ] "c" ]</literal>. + +<programlisting> +builtins.split "([ac])" "abc" +</programlisting> + +Evaluates to <literal>[ "" [ "a" ] "b" [ "c" ] "" ]</literal>. + +<programlisting> +builtins.split "(a)|(c)" "abc" +</programlisting> + +Evaluates to <literal>[ "" [ "a" null ] "b" [ null "c" ] "" ]</literal>. + +<programlisting> +builtins.split "([[:upper:]]+)" " FOO " +</programlisting> + +Evaluates to <literal>[ " " [ "FOO" ] " " ]</literal>. + + </para></listitem> + </varlistentry> + <varlistentry><term><function>builtins.stringLength</function> <replaceable>e</replaceable></term> |