Perl Functions in Alphabetical Order

Perl Functions in Alphabetical Order

NEW!!!

Check my new resource: Perl How To Tutorial eBooks

I’ll list some of the most important built-in functions here, in an alphabetical order. I’ll periodically extend this list, so I’ll be waiting for you to land here again – it is a good idea to bookmark this page and revisit it after awhile. The examples provided for each function cover quite a large area so I hope you’ll get what you are looking for.

Check my new How To Tutorial eBooks (PDF format):
"Perl Statements - How To Tutorial"
"Perl Scalar and String Functions - How To Tutorial"

to see a lot of fully commented examples that help you use the Perl statements and the Perl built-in functions in your scripts.

chomp	removes trailing newlines and returns the number of characters removed
chop	removes and returns the last character from a string
chr	converts ASCII or Unicode values into their equivalent characters
crypt	allows you to store passwords or other sensitive data using ASCII characters as encrypted strings
defined	allows you to check-up whether a function or o variable is defined or not
delete	removes a key-value pair from a hash; you can delete an individual element of a hash or a hash slice.
each	returns a two-element list that contains a (key, value) pair from a hash or a (index, value) pair from an array
grep	is used to filter a list and to return only those elements that match a certain criteria
hex	converts a hex string into the numerical corresponding value
index	returns the position of the first occurrence of a substring in a string
join	is used to concatenate the elements of an array or a list into a string, using a separator given by a scalar variable
lc	converts all the characters of a string in lowercases and returns the new string
lcfirst	converts the first character of a string in lowercase and returns the new string
length	returns the number of characters in a string
map	takes a list and evaluates an expression or block on each element of the list; it returns a list with the results
oct	converts an octal string into the numerical corresponding value
ord	converts a character to its ASCII or Unicode numeric value
pack	converts a list of values into a template string, enabling you to write data in a format that would be compatible with other program languages such as C; practically, it packs the list of values into a binary structure that will be returned as a string
pop	removes and returns the last element of an array; the size of the array decreases by 1
push	is used to append a list onto the end of an array
q	singly quote a string
qq	doubly quote a string
qw	uses whitespace separator to split an expression passed to it into a list of elements and returns that list
reverse	in a scalar context, it concatenates the elements of a list in a string and returns the string with all the characters in an opposite order; in a list context, it returns the list in the reversed order
rindex	returns the position of the last occurrence of a substring in a string
scalar	enables you to evaluate an expression in a scalar context and returns the value of that expression
shift	removes and returns the first element of an array, shortening the dimension of the array with 1
sort	sorts a LIST by an alphabetical or numerical order and returns the sorted list value
splice	is used to remove, replace or add elements from or to an array
split	allows you to break up a string into an array or a list, by using a specific pattern
sprintf	returns a string formatted by the usual printf conventions of the C library function sprintf
substr	extracts a substring from a string and returns it
tr	transliterates a string
uc	converts all the characters of a string in uppercases and returns the new string
ucfirst	converts the first character of a string in uppercase and returns the new string
undef	returns an undefined value, freeing up the memory used by the variable arguments passed to it
unshift	inserts a list at the beginning of an array and returns the total number of elements of the array

Subscribe now to my FREE newsletter
(regarding tips and tricks to manipulate multidimensional
arrays and hashes in Perl)
and you'll receive a link to download for FREE my Perl chomp Function Tutorial eBook, it's a bonus for you and I hope you'll enjoy it. You can see its Table of Contents here (if you subscribe to my free newsletter, you don't have to pay for this eBook or use your paypal account).

Don't forget to check my new How To Tutorial eBooks (PDF format):
"Perl Statements - How To Tutorial"
"Perl Scalar and String Functions - How To Tutorial"

to see a lot of fully commented examples that help you use the Perl statements and the Perl built-in functions in your scripts.

NEW!!!

Do you want more information about the basic Perl topics?

Check my new "Perl How To" Tutorial eBooks page where I'll answer the most frequent questions regarding some topics :

Perl How To Tutorial eBooks

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
        grep
        hex
        index
        join
        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
        unshift

return to Perl Basics

Would you like to create your own website like this one?
Hit the Alarm Clock!

footer for perl A-Z functions page