[ ソース: libperlx-maybe-perl ]
パッケージ: libperlx-maybe-perl (1.202-1)
libperlx-maybe-perl に関するリンク
Debian の資源:
libperlx-maybe-perl ソースパッケージをダウンロード:
- [libperlx-maybe-perl_1.202-1.dsc]
- [libperlx-maybe-perl_1.202.orig.tar.gz]
- [libperlx-maybe-perl_1.202-1.debian.tar.xz]
メンテナ:
外部の資源:
- ホームページ [metacpan.org]
類似のパッケージ:
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.
その他の libperlx-maybe-perl 関連パッケージ
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- dep: libmodule-manifest-skip-perl
- MANIFEST.SKIP management for Perl modules
-
- dep: perl
- Larry Wall 作の実用的な抽出とレポート用の言語
-
- 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