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demo of devel declare prototype
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| use fn; | |
| use 5.010; | |
| fn foo ($f, $a; $extra) { | |
| say "going to call with ($a)"; | |
| $f->($a); | |
| if (defined($extra)) { | |
| say "got extra: $extra"; | |
| } | |
| say "done with call"; | |
| } | |
| foo( fn ($msg) { | |
| say "bar: $msg"; | |
| }, "lol"); |
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| [sweeks@sweeks-laptop dd]$ perl f.pl | |
| going to call with (lol) | |
| bar: lol | |
| done with call |
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