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.\" ========================================================================
.\"
.IX Title "Search::Dict 3"
.TH Search::Dict 3 "2019-10-24" "perl v5.30.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Search::Dict \- look \- search for key in dictionary file
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    use Search::Dict;
\&    look *FILEHANDLE, $key, $dict, $fold;
\&
\&    use Search::Dict;
\&    look *FILEHANDLE, $params;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Sets file position in \s-1FILEHANDLE\s0 to be first line greater than or equal
(stringwise) to \fI\f(CI$key\fI\fR.  Returns the new file position, or \-1 if an error
occurs.
.PP
The flags specify dictionary order and case folding:
.PP
If \fI\f(CI$dict\fI\fR is true, search by dictionary order (ignore anything but word
characters and whitespace).  The default is honour all characters.
.PP
If \fI\f(CI$fold\fI\fR is true, ignore case.  The default is to honour case.
.PP
If there are only three arguments and the third argument is a hash
reference, the keys of that hash can have values \f(CW\*(C`dict\*(C'\fR, \f(CW\*(C`fold\*(C'\fR, and
\&\f(CW\*(C`comp\*(C'\fR or \f(CW\*(C`xfrm\*(C'\fR (see below), and their corresponding values will be
used as the parameters.
.PP
If a comparison subroutine (comp) is defined, it must return less than zero,
zero, or greater than zero, if the first comparand is less than,
equal, or greater than the second comparand.
.PP
If a transformation subroutine (xfrm) is defined, its value is used to
transform the lines read from the filehandle before their comparison.