IO::Unread Push more than one character back onto a filehandle
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IO::Unread Ranking & Summary

IO::Unread Tags

Perl module functions exporter character push character export functions

IO::Unread Description

Push more than one character back onto a filehandle IO::Unread is a Perl module that exports one function, unread, which will push data back onto a filehandle. Any amount of data can be pushed: if your perl is built with PerlIO layers, the data is stored in a special :pending layer; if not, the module ties the filehandle to a class which returns the unread data and unties itself.unread FILEHANDLE, LISTunread unreads LIST onto FILEHANDLE. If LIST is omitted, $_ is unread. Returns the number of characters unread on success, undef on failure. Warnings are produced under category io.Note that unread $FH, 'a', 'b' is equivalent to unread $FH, 'a'; unread $FH, 'b';, ie. to unread $FH, 'ba' rather than unread $FH, 'ab'.ungetc FILEHANDLE, STRINGungetc pushes the first character of STRING onto FILEHANDLE. Unlike unread, it does not use a tie implementation if your perl doesn't support PerlIO layers; rather it calls your ungetc(3). This is only guarenteed to support one character of pushback, and then only if it is the last character that was read from the handle.SYNOPSIS use IO::Unread; unread STDIN, "hello world "; $_ = "goodbye"; unread ARGV; Requirements: · Perl

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