Acme-CPANModules-Assert
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NAME
Acme::CPANModules::Assert - List of modules to do assertion
VERSION
This document describes version 0.002 of Acme::CPANModules::Assert (from
Perl distribution Acme-CPANModules-Assert), released on 2022-03-08.
DESCRIPTION
Assertion is a check statement that must evaluate to true or it will
abort program's execution. It is useful during development/debugging:
assert("there must be >3 arguments", sub { @args > 3 });
In production code, compilers ideally do not generate code for assertion
statements so they do not have any impact on runtime performance.
In the old days, you only have this alternative to do it in Perl:
assert(...) if DEBUG;
where "DEBUG" is a constant subroutine, declared using:
use constant DEBUG => 0;
or:
sub DEBUG() { 0 }
The perl compiler will optimize away and remove the code entirely when
"DEBUG" is false. But having to add "if DEBUG" to each assertion is
annoying and error-prone.
Nowadays, you have several alternatives to have a true, C-like
assertions. One technique is using Devel::Declare (e.g. PerlX::Assert).
Another technique is using B::CallChecker (e.g. Assert::Conditional).
ACME::CPANMODULES ENTRIES
* Assert::Conditional - conditionally-compiled code assertions
Author: TOMC <https://metacpan.org/author/TOMC>
* PerlX::Assert - yet another assertion keyword
Author: TOBYINK <https://metacpan.org/author/TOBYINK>
* Devel::Assert
Author: RANDIR <https://metacpan.org/author/RANDIR>
FAQ
What is an Acme::CPANModules::* module?
An Acme::CPANModules::* module, like this module, contains just a list
of module names that share a common characteristics. It is a way to
categorize modules and document CPAN. See Acme::CPANModules for more
details.
What are ways to use this Acme::CPANModules module?
Aside from reading this Acme::CPANModules module's POD documentation,
you can install all the listed modules (entries) using cpanm-cpanmodules
script (from App::cpanm::cpanmodules distribution):
% cpanm-cpanmodules -n Assert
Alternatively you can use the cpanmodules CLI (from App::cpanmodules
distribution):
% cpanmodules ls-entries Assert | cpanm -n
or Acme::CM::Get:
% perl -MAcme::CM::Get=Assert -E'say $_->{module} for @{ $LIST->{entries} }' | cpanm -n
or directly:
% perl -MAcme::CPANModules::Assert -E'say $_->{module} for @{ $Acme::CPANModules::Assert::LIST->{entries} }' | cpanm -n
This Acme::CPANModules module also helps lcpan produce a more meaningful
result for "lcpan related-mods" command when it comes to finding related
modules for the modules listed in this Acme::CPANModules module. See
App::lcpan::Cmd::related_mods for more details on how "related modules"
are found.
HOMEPAGE
Please visit the project's homepage at
<https://metacpan.org/release/Acme-CPANModules-Assert>.
SOURCE
Source repository is at
<https://github.com/perlancar/perl-Acme-CPANModules-Assert>.
SEE ALSO
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