[ ソース: liblexical-underscore-perl ]
パッケージ: liblexical-underscore-perl (0.004-1)
liblexical-underscore-perl に関するリンク
Debian の資源:
liblexical-underscore-perl ソースパッケージをダウンロード:
- [liblexical-underscore-perl_0.004-1.dsc]
- [liblexical-underscore-perl_0.004.orig.tar.gz]
- [liblexical-underscore-perl_0.004-1.debian.tar.xz]
メンテナ:
外部の資源:
- ホームページ [search.cpan.org]
類似のパッケージ:
access your caller's lexical underscore
Starting with Perl 5.10, it is possible to create a lexical version of the Perl default variable $_. Certain Perl constructs like the "given" keyword automatically use a lexical $_ rather than the global $_.
It is occasionallly useful for a sub to be able to access its caller's $_ variable regardless of whether it was lexical or not. The "(_)" sub prototype is the official way to do so, however there are sometimes disadvantages to this; in particular it can only appear as the final required argument in a prototype, and there is no way of the sub differentiating between an explicitly passed argument and $_.
lexical::underscore allows you to access your caller's lexical $_ variable as easily as:
${lexical::underscore()}
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