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Matt's Script Archive is a collection of CGI scripts written in the Perl programming language. Started in 1995 by Matt Wright (at the time a high school student in Fort Collins, Colorado), the archive contains about a dozen free scripts, designed to be easily added to a site and configured. [ 1 ]
The Perl Cookbook inspired the PLEAC (Programming Language Examples Alike Cookbook) website, which translated the code snippets in the Perl Cookbook into other languages: Python, Ruby, Guile, Tcl, Java, and beyond. O'Reilly went on to publish other Cookbooks inspired by the Perl Cookbook's format, including Java Cookbook, Python Cookbook, CSS ...
Switch expressions are introduced in Java SE 12, 19 March 2019, as a preview feature. Here a whole switch expression can be used to return a value. There is also a new form of case label, case L-> where the right-hand-side is a single expression. This also prevents fall through and requires that cases are exhaustive.
This includes Perl itself, nearly all publicly released modules, many scripts, most design documents, many articles on Perl.com and other Perl-related web sites, and the Parrot virtual machine. Pod is rarely read in the raw, although it is designed to be readable without the assistance of a formatting tool.
The switch parser function, coded as "#switch", selects the first matching branch in a list of choices, acting as a case statement. Each branch can be a value , an expression ( calculation ), or a template call, [ 1 ] evaluated and compared to match the value of the switch.
Switch statements can allow compiler optimizations, such as lookup tables. In dynamic languages, the cases may not be limited to constant expressions, and might extend to pattern matching, as in the shell script example on the right, where the *) implements the default case as a glob matching any string.
Perl provides three loop control keywords that all accept an optional loop label as an argument. If no label is specified, the keywords act on the innermost loop. Within nested loops, the use of labels enables control to move from an inner loop to an outer one, or out of the outer loop altogether.
Perl Programming Documentation, also called perldoc, is the name of the user manual for the Perl 5 programming language. It is available in several different formats, including online in HTML and PDF. The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod).