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Perl

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Perl Index

Perl Index index This function returns the position of the first occurance of the specified SEARCH string. If POSITION is specified, the occurance at or after the position is returned. The value -1 is returned if the SEARCH string is not found. [perl] rindex STRING,SEARCH,POSITION rindex STRING,SEARCH [/perl]
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PERL – Length

PERL – Length [perl] $RESULT = length(EXPRESSION); [/perl] Perl’s length() function simply returns the length of a perl string in characters [perl] $myString = ‘perl.about.com’; $myLength = length($myString); [/perl] In this example, we’ve created a string with the value perl.about.com. When we run the length function on the string, it will return 14, or the […]
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Perl Push Array

Perl Push Array A slightly more interesting kind of variable is the array variable which is a list of scalars (ie numbers and strings). Array variables have the same format as scalar variables except that they are prefixed by an @ symbol. The statement @food = ("apples", "pears", "eels"); @music = ("whistle", "flute"); assigns a […]
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Pass Parameters to Perl Script

Pass Parameters to Perl Script Perl command line arguments stored in the special array called @ARGV. ARGV example Use $ARGV[n] to display argument. Use $#ARGV to get total number of passed argument to a perl script. For example, if your scriptname is foo.pl and you called script as follows: ./foo.pl one two three You can […]
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Perl Split

Perl Split A very useful function in Perl is split, which splits up a string and places it into an array. The function uses a regular expression and as usual works on the $_ variable unless otherwise specified. The split function is used like this: [perl] $info = “Caine:Michael:Actor:14, Leafy Drive”; @personal = split(/:/, $info); […]
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