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| author | Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> | 2019-10-23 19:00:38 +0100 |
|---|---|---|
| committer | Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> | 2019-12-09 23:19:05 +0000 |
| commit | 813e85a03dc214f719dc8248bda36156897b0757 (patch) | |
| tree | 9e3c12a41469a967477219e0d0a670ab593618d2 /gv.c | |
| parent | e139e9c0aa8151ab29e98bb9f3216ee7a14abe4d (diff) | |
| download | perl-813e85a03dc214f719dc8248bda36156897b0757.tar.gz | |
Add the `isa` operator
Adds a new infix operator named `isa`, with the semantics that
$x isa SomeClass
is true if and only if `$x` is a blessed object reference that is either
`SomeClass` directly, or includes the class somewhere in its @ISA
hierarchy. It is false without warning or error for non-references or
non-blessed references.
This operator respects `->isa` method overloading, and is intended to
replace boilerplate code such as
use Scalar::Util 'blessed';
blessed($x) and $x->isa("SomeClass")
Diffstat (limited to 'gv.c')
| -rw-r--r-- | gv.c | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -525,9 +525,10 @@ S_maybe_add_coresub(pTHX_ HV * const stash, GV *gv, case KEY_do : case KEY_dump : case KEY_else : case KEY_elsif : case KEY_END : case KEY_eq : case KEY_eval : case KEY_for : case KEY_foreach: case KEY_format: case KEY_ge : - case KEY_given : case KEY_goto : case KEY_grep : - case KEY_gt : case KEY_if: case KEY_INIT: case KEY_last: case KEY_le: - case KEY_local: case KEY_lt: case KEY_m : case KEY_map : case KEY_my: + case KEY_given : case KEY_goto : case KEY_grep : case KEY_gt : + case KEY_if : case KEY_isa : case KEY_INIT : case KEY_last : + case KEY_le : case KEY_local : case KEY_lt : case KEY_m : + case KEY_map : case KEY_my: case KEY_ne : case KEY_next : case KEY_no: case KEY_or: case KEY_our: case KEY_package: case KEY_print: case KEY_printf: case KEY_q : case KEY_qq : case KEY_qr : case KEY_qw : |