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| author | Zefram <zefram@fysh.org> | 2014-02-01 01:27:13 +0000 |
|---|---|---|
| committer | Zefram <zefram@fysh.org> | 2014-02-01 01:27:15 +0000 |
| commit | 30d9c59b5f3cba8b5d632d20c2370e82d8ba69ca (patch) | |
| tree | 989db43c82b395cec053b341532db7a145827254 /warnings.h | |
| parent | ef463b6d87c1ce4e4946bdf785d47e481c1f33f2 (diff) | |
| download | perl-30d9c59b5f3cba8b5d632d20c2370e82d8ba69ca.tar.gz | |
subroutine signatures
Declarative syntax to unwrap argument list into lexical variables.
"sub foo ($a,$b) {...}" checks number of arguments and puts the
arguments into lexical variables. Signatures are not equivalent to the
existing idiom of "sub foo { my($a,$b) = @_; ... }". Signatures are only
available by enabling a non-default feature, and generate warnings about
being experimental. The syntactic clash with prototypes is managed by
disabling the short prototype syntax when signatures are enabled.
Diffstat (limited to 'warnings.h')
| -rw-r--r-- | warnings.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/warnings.h b/warnings.h index c1e0b9337b..66e4153d6b 100644 --- a/warnings.h +++ b/warnings.h @@ -99,7 +99,8 @@ #define WARN_EXPERIMENTAL__AUTODEREF 56 #define WARN_EXPERIMENTAL__POSTDEREF 57 -#define WARN_SYSCALLS 58 +#define WARN_EXPERIMENTAL__SIGNATURES 58 +#define WARN_SYSCALLS 59 #define WARNsize 15 #define WARN_ALLstring "\125\125\125\125\125\125\125\125\125\125\125\125\125\125\125" |