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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
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- project.
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- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
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- WITHOUT ANY WARRANTY; without even the implied warranty of
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- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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-->
<refentry id="fn_ltrim">
<refmeta>
<refentrytitle>ltrim</refentrytitle>
<refmiscinfo>string</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ltrim</refname>
<refpurpose>removes specific characters from a string</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_ltrim">
<funcprototype id="fproto_ltrim">
<funcdef><function>ltrim</function></funcdef>
<paramdef><parameter>str</parameter> string</paramdef>
<paramdef><optional><parameter>trimchars</parameter> string</optional></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_ltrim"><title>Description</title>
<para>ltrim returns a copy of subsequence of string str with all the characters
present in trimchars trimmed off from the beginning. If the second
argument is omitted, it is a space ' ' by default.
</para>
<para>
rtrim is similar except that it trims from the right.
</para>
<para>
trim trims from both ends.
</para>
<screen>concat('*',trim(' SIMURG '),'*') -> '*SIMURG*'
ltrim('AbracadabrA','bAr') -> 'acadabrA'
rtrim('AbracadabrA','bAr') -> 'Abracada'
trim('AbracadabrA','bAr') -> 'acada'
</screen>
</refsect1>
</refentry>
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