Slurp

- Slurp means reading or writing a file at one shot, instead of
reading or writing line by line.
- Generally slurp if very fast than normal reading a file line by line
- But slurp uses more memory, as it needs to keep th whole file
in a scalar (or) an array, but now a days as everybody is
having enormous amount of hard disk space and RAM, its not
a problem with Slurp.
- But those people where memeory and space concerns are there,
don't go for Slurp
- Some Cpan modules on Slurp are:
1) Slurp # Allows you to read multiple files at a time
2) File::Slurp # Good module for Slurp
3) Perl6::Slurp # Recent module on Slurp with lot more features


The Program will read a folder and read all the files and slurp them into an array and writes to output file
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#!F:\Perl\bin\perl -w

use Slurp;
use File::Slurp;
use Data::Dumper;
use strict;

my $dir='F:\Documents and Settings\Administrator\Desktop\sample_programs';
opendir DIR, $dir or die "cannot open dir $dir: $!";
my @file= readdir DIR;
closedir DIR;

my @final_files;
print "\n All file names before:", Dumper(\@file);

for (@file) {
next if($_ =~/^\.+|\.swp$|\~$/ig);
push (@final_files, $_);
}

my @zx = slurp(@final_files);
write_file('output.txt', @zx);

my @out = File::Slurp::read_file('output.txt');
print "\n output:" , Dumper(\@out);