Regular Expressions and Pattern Matching



Because the Perl language is a flexible text-processing language, the regular expressions are an integral part of it. To handle this it were implemented a lot of regular expressions making it possible to do a lot of tasks including complex string comparisons, complex string selections and replacements, string pattern matching and many other.

Through the Perl available functions that focus on regular expression, we'll describe here the most important and the very often used:

split converts a string into a list and returns that list; the words of the string must be delimitated by a separator







Table of Contents:

A Perl Script
Install Perl
Running Perl
Perl Data Types
Perl Variables
Perl Operators
Perl Lists
Perl Arrays
    Array Size
    Array Length
Perl Hashes
Perl Statements
    Perl if
    Perl unless
    Perl switch
    Perl while
    Perl do-while
    Perl until
    Perl do-until
    Perl for
    Perl foreach
Built-in Perl Functions
    Functions by Category
        String Functions
        List Functions
        Array Functions
        Hash Functions
        Miscellaneous Functions
    Functions in alphabetical order
        chomp
        chop
        chr
        crypt
        defined
        delete
        each
        exists
        grep
        hex
        index
        join
        keys
        lc
        lcfirst
        length
        map
        oct
        ord
        pack
        pop
        push
        q
        qq
        qw
        reverse
        rindex
        scalar
        shift
        sort
        splice
        split
        sprintf
        substr
        tr
        uc
        ucfirst
        undef
        unpack
        unshift
        values

return from Regular Expressions and Pattern Matching to Perl Basics



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