Interview: Trying to Catch Paul "LeoNerd" Evans
The prolific CPAN and Perl core developer talks about exceptions and other Perl topics.
My Perl Wishlist: Invariant Sigils (Part 1)
The change I would most like to see in Perl 5, and why it might not happen
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Display beautiful Perl code in HTML without JavaScript
PPI::Prettify makes pretty-printing Perl code as HTML easy
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Banish unsightly variable assignments with Method::Signatures
Add subroutine signatures to Perl
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Dynamic variable names with a dereferencing block
Perl is remarkably flexible and allows you to achieve all kinds of wizardry with the language. One example of this is using a dereferencing block to use a scalar value as a variable name. This allows you to use variables with dynamic names.
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The conditional (ternary) operator
One way to reduce the verbosity of Perl code is to replace if-else statements with a conditional operator expression. The conditional operator (aka ternary operator) takes the form: logical test ? value if true : value if false.
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List shortcuts: qw the quote whitespace operator
A popular way to build a list of literal quotes in Perl is to use the quote whitespace operator (qw). It’s terse, versatile and elegant. To see why, let’s look at a typical statement using a list of strings:
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Perl arrays 101 - create, loop and manipulate
Arrays in Perl contain an ordered list of values that can be accessed using built-in functions. They are one of the most useful data structures and frequently used in Perl programming.
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Upgrade your list printing using field separator variables
A typical way to print every element of an array in Perl is using a foreach loop:
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Perl string functions - concatenate substring and split
Perl has many string functions, let’s take a look at a some of the most common ones: concatenate, substring and split.
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Find the index of the last element in an array
Most Perl programmers know that to find the size of an array, the array must called in a scalar context like this:
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New Features of Perl 5.14: Non-destructive Substitution
Perl 5.14 adds non-destructive substitution.
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