套件：libperlx-maybe-perl（1.202-1）

[ 原始碼： libperlx-maybe-perl  ]

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.

標籤: 軟體開發: Perl 開發, 函式庫, 實做語言: Perl

其他與 libperlx-maybe-perl 有關的套件

• 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

下載 libperlx-maybe-perl

下載可用於所有硬體架構的

硬體架構	套件大小	安裝後大小	檔案
all	13。8 kB	38。0 kB	[檔案列表]