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Top Forums Shell Programming and Scripting perl -write values in a file to @array in perl Post 302215978 by KevinADC on Thursday 17th of July 2008 04:28:32 PM
Old 07-17-2008
Quote:
Originally Posted by summer_cherry
Code:
open(FH,"<file");
while(<FH>){
$_=~ tr/\n//d;
push(@arr, $_); 
}
close(FH);
print join("|",@arr);

That is a bad solution for such a simple problem. Use chomp instead of tr to remove end of line record seperators, it is way more efficient for that purpose. And using push() just slows down reading the file into an array, which perl does automatically when the filehandle is output in list context:

@array = <FH>;
 

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TAP::Parser::YAMLish::Writer(3) 			User Contributed Perl Documentation			   TAP::Parser::YAMLish::Writer(3)

NAME
TAP::Parser::YAMLish::Writer - Write YAMLish data VERSION
Version 3.28 SYNOPSIS
use TAP::Parser::YAMLish::Writer; my $data = { one => 1, two => 2, three => [ 1, 2, 3 ], }; my $yw = TAP::Parser::YAMLish::Writer->new; # Write to an array... $yw->write( $data, @some_array ); # ...an open file handle... $yw->write( $data, $some_file_handle ); # ...a string ... $yw->write( $data, $some_string ); # ...or a closure $yw->write( $data, sub { my $line = shift; print "$line "; } ); DESCRIPTION
Encodes a scalar, hash reference or array reference as YAMLish. METHODS
Class Methods "new" my $writer = TAP::Parser::YAMLish::Writer->new; The constructor "new" creates and returns an empty "TAP::Parser::YAMLish::Writer" object. Instance Methods "write" $writer->write($obj, $output ); Encode a scalar, hash reference or array reference as YAML. my $writer = sub { my $line = shift; print SOMEFILE "$line "; }; my $data = { one => 1, two => 2, three => [ 1, 2, 3 ], }; my $yw = TAP::Parser::YAMLish::Writer->new; $yw->write( $data, $writer ); The $output argument may be: o a reference to a scalar to append YAML to o the handle of an open file o a reference to an array into which YAML will be pushed o a code reference If you supply a code reference the subroutine will be called once for each line of output with the line as its only argument. Passed lines will have no trailing newline. AUTHOR
Andy Armstrong, <andy@hexten.net> SEE ALSO
YAML::Tiny, YAML, YAML::Syck, Config::Tiny, CSS::Tiny, <http://use.perl.org/~Alias/journal/29427> COPYRIGHT
Copyright 2007-2011 Andy Armstrong. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.16.3 2013-05-02 TAP::Parser::YAMLish::Writer(3)
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