X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pod%2Fperlsub.pod;h=4329c161ff2175d668b7b4b2e4c5e92363a83f95;hb=f7686833794ab18a8c8729b0e836f6f14223ce97;hp=cef8050731b82a2803d72cd21d9225e53e97266b;hpb=551e1d922a333f90a45a26904eb4d9882f7bd5d4;p=p5sagit%2Fp5-mst-13.2.git diff --git a/pod/perlsub.pod b/pod/perlsub.pod index cef8050..4329c16 100644 --- a/pod/perlsub.pod +++ b/pod/perlsub.pod @@ -207,8 +207,8 @@ core, as are modules whose names are in all lower case. A function in all capitals is a loosely-held convention meaning it will be called indirectly by the run-time system itself, usually due to a triggered event. Functions that do special, pre-defined -things include C, C, C, C, C, and -C--plus all functions mentioned in L. +things include C, C, C, C, C, +C and C--plus all functions mentioned in L. =head2 Private Variables via my() @@ -645,10 +645,6 @@ and in: all the subroutines are called in a list context. -The current implementation does not allow arrays and hashes to be -returned from lvalue subroutines directly. You may return a -reference instead. This restriction may be lifted in future. - =head2 Passing Symbol Table Entries (typeglobs) B: The mechanism described in this section was originally @@ -930,6 +926,22 @@ that absolutely must start with that character. The value passed as part of C<@_> will be a reference to the actual argument given in the subroutine call, obtained by applying C<\> to that argument. +You can also backslash several argument types simultaneously by using +the C<\[]> notation: + + sub myref (\[$@%&*]) + +will allow calling myref() as + + myref $var + myref @array + myref %hash + myref &sub + myref *glob + +and the first argument of myref() will be a reference to +a scalar, an array, a hash, a code, or a glob. + Unbackslashed prototype characters have special meanings. Any unbackslashed C<@> or C<%> eats all remaining arguments, and forces list context. An argument represented by C<$> forces scalar context. An