[ 源代码： libperlx-maybe-perl ]
软件包：libperlx-maybe-perl（1.202-1）
libperlx-maybe-perl 的相关链接
Debian 的资源：
下载源码包 libperlx-maybe-perl：
- [libperlx-maybe-perl_1.202-1.dsc]
- [libperlx-maybe-perl_1.202.orig.tar.gz]
- [libperlx-maybe-perl_1.202-1.debian.tar.xz]
维护小组：
外部的资源：
- 主页 [metacpan.org]
相似软件包：
return a pair only if they are both defined
Moose classes (and some other classes) distinguish between an attribute being unset and the attribute being set to undef. Supplying a constructor arguments like this:
my $bob = Person->new(
name => $name,
age => $age,
);
Will result in the "name" and "age" attributes possibly being set to undef (if the corresponding $name and $age variables are not defined), which may violate the Person class' type constraints.
PerlX::Maybe checks that $x and $y are both defined. If they are, it returns them both as a list; otherwise it returns the empty list.
This package also includes Syntax::Feature::Maybe.
其他与 libperlx-maybe-perl 有关的软件包
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- dep: libmodule-manifest-skip-perl
- MANIFEST.SKIP management for Perl modules
-
- dep: perl
- 拉里 沃尔的实用报表提取语言(Perl)
-
- rec: libexporter-tiny-perl
- tiny exporter similar to Sub::Exporter
-
- rec: libperlx-maybe-xs-perl
- XS backend for PerlX::Maybe
-
- sug: libsyntax-perl
- pragma for activating syntax extensions