Arthas-Defaults
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if ($^V lt v5.40.0) {
experimental->import('try');
experimental->import('defer');
} else {
feature->import('try');
feature->import('defer');
}
# Export all @EXPORT
Arthas::Defaults::536->export_to_level(1, @_);
}
sub unimport {
feature->unimport();
strict->unimport();
warnings->unimport();
utf8->unimport();
experimental->unimport('try');
experimental->unimport('defer');
}
1;
__END__
=head1 NAME
Arthas::Defaults::536 - Defaults for coding with perl 5.36 - Do not use if you're not Arthas
=head1 SYNOPSIS
use Arthas::Defaults::536;
=head1 DESCRIPTION
It's like saying:
use v5.36;
use utf8;
use warnings;
no warnings 'uninitialized';
use experimental 'signatures';
use experimental 'try';
use experimental 'defer';
use Carp qw/carp croak confess cluck/;
Might change without notice, at any time. DO NOT USE!
=over
=item C<use v5.36>
This is actually C<use feature ':5.36'>. It imports some perl 5.10 -> 5.36
semantics, such as strict, given-when syntax, Unicode strings, signatures, ... See
L<feature> documentation and source code for more information.
=item C<use utf8>
This is NOT related to handling UTF-8 strings or input/output (see
C<use feature 'unicode_strings'> imported with C<use v5.20> for
something more related to that).
C<use utf8> is imported in order to allow UTF-8 characters inside the source
code: while using UTF-8 in the source is not standard procedure, it
happens to me every now and then. Also, enabling this feature does
no harm if you're using a recent version of perl, so why not enable it?
=item C<use warnings FATAL =E<gt> 'all'>
Warnings are useful, who wouldn't want them?
However, if they are not treated as fatal errors, they are often
ignored, making them pointless. So, be fatal!
=item C<no warnings 'uninitialized'>
Well, I<most> warnings are useful. The ones regarding uninitialized (undef)
variables are a bit of a pain. Writing a code such as this:
my $str;
if ( $str eq 'maya' ) {
say 'Maya!';
}
would emit a warning, thus forcing you to write:
my $str;
if ( defined $str && $str eq 'maya' ) {
say 'Maya!';
}
which is boring enough to justify suppressing these warnings.
=item C<use Carp qw/carp croak confess cluck/>
These functions are very useful to show error details better
than that of C<die()> and C<warn()>.
=item C<use experimental 'try'>
Try - catch - finally... finally!
=item C<use experimental 'defer'>
Defer blocks seem to be very useful.
=back
=head1 WARNING
The 5.36 version of this module is not compatible with the previous one,
bcause it replaces L<Try::Tiny> with Perl's own new Try/Catch syntax,
and discards the obsoleted C<postderef> syntax.
=head1 AUTHOR
Michele Beltrame, C<arthas@cpan.org>
( run in 0.614 second using v1.01-cache-2.11-cpan-39bf76dae61 )