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| -rw-r--r-- | gnu/packages/perl.scm | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gnu/packages/perl.scm b/gnu/packages/perl.scm index e9f3dca15a..92d973b7b1 100644 --- a/gnu/packages/perl.scm +++ b/gnu/packages/perl.scm @@ -266,6 +266,33 @@ manipulate, read, and write Zip archive files.") list manipulation routines.") (license (package-license perl)))) +(define-public perl-autovivification + (package + (name "perl-autovivification") + (version "0.16") + (source + (origin + (method url-fetch) + (uri (string-append "mirror://cpan/authors/id/V/VP/VPIT/" + "autovivification-" version ".tar.gz")) + (sha256 + (base32 + "1422kw9fknv7rbjkgdfflg1q3mb69d3yryszp38dn0bgzkqhwkc1")))) + (build-system perl-build-system) + (home-page "http://search.cpan.org/dist/autovivification") + (synopsis "Lexically disable autovivification") + (description "When an undefined variable is dereferenced, it gets silently +upgraded to an array or hash reference (depending of the type of the +dereferencing). This behaviour is called autovivification and usually does +what you mean but it may be unnatural or surprising because your variables get +populated behind your back. This is especially true when several levels of +dereferencing are involved, in which case all levels are vivified up to the +last, or when it happens in intuitively read-only constructs like +@code{exists}. The pragma provided by this package lets you disable +autovivification for some constructs and optionally throws a warning or an +error when it would have happened.") + (license (package-license perl)))) + (define-public perl-base (package (name "perl-base") |