[ 原始碼： libperlx-maybe-perl ]
套件： libperlx-maybe-perl (1.201-1)
libperlx-maybe-perl 的相關超連結
Trisquel 的資源：
下載原始碼套件 libperlx-maybe-perl：
- [libperlx-maybe-perl_1.201-1.dsc]
- [libperlx-maybe-perl_1.201.orig.tar.gz]
- [libperlx-maybe-perl_1.201-1.debian.tar.xz]
維護者：
Original Maintainers:
- Debian Perl Group (郵件存檔)
- Jonas Smedegaard
- Florian Schlichting
外部的資源：
- 主頁 [metacpan.org]
相似套件：
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.
其他與 libperlx-maybe-perl 有關的套件
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- dep: libmodule-manifest-skip-perl
- MANIFEST.SKIP management for Perl modules
-
- dep: perl
- Larry Wall's Practical Extraction and Report Language
-
- 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