p5sagit / devel-beginlift Goto Github PK
View Code? Open in Web Editor NEWHome Page: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=p5sagit/Devel-BeginLift;a=summary
Home Page: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=p5sagit/Devel-BeginLift;a=summary
NAME Devel::BeginLift - make selected sub calls evaluate at compile time SYNOPSIS use Devel::BeginLift qw(foo baz); use vars qw($i); BEGIN { $i = 0 } sub foo { "foo: $_[0]\n"; } sub bar { "bar: $_[0]\n"; } for (1 .. 3) { print foo($i++); print bar($i++); } no Devel::BeginLift; print foo($i++); outputs - foo: 0 bar: 1 foo: 0 bar: 2 foo: 0 bar: 3 foo: 4 DESCRIPTION Devel::BeginLift 'lifts' arbitrary sub calls to running at compile time - sort of a souped up version of "use constant". It does this via some slightly insane perlguts magic. import use Devel::BeginLift qw(list of subs); Calls Devel::BeginLift->setup_for(__PACKAGE__ => \@list_of_subs); unimport no Devel::BeginLift; Calls Devel::BeginLift->teardown_for(__PACKAGE__); setup_for Devel::BeginLift->setup_for($package => \@subnames); Installs begin lifting magic (unless already installed) and registers "${package}::$name" for each member of @subnames to be executed when parsed and replaced with its output rather than left for runtime. teardown_for Devel::BeginLift->teardown_for($package); Deregisters all subs currently registered for $package and uninstalls begin lifting magic is number of teardown_for calls matches number of setup_for calls. setup_for_cv $id = Devel::BeginLift->setup_for_cv(\&code); Same as "setup_for", but only registers begin lifting magic for one code reference. Returns an id to be used in "teardown_for_cv". teardown_for_cv Devel::BeginLift->teardown_for_cv($id); Deregisters begin lifting magic referred to by $id. AUTHOR Matt S Trout - <[email protected]> Company: http://www.shadowcatsystems.co.uk/ Blog: http://chainsawblues.vox.com/ LICENSE This library is free software under the same terms as perl itself
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.