in reply to Re: looking for a good idiom: return this if this is true
in thread looking for a good idiom: return this if this is true

The || operator is the high priority logical or, so if thatroutine() evaluates false, die is evaluated before return is.

Update: Oops, I misunderstood your objection, which is correct: 

$ perl -Mstrict -we'sub bar {"baz"} sub foo {eval{return bar() || die}
+; "quux"} print foo()'
quux$

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If the eval return was effective in the foo() call, should have printed "baz".

After Compline,
Zaxo

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Re^3: looking for a good idiom: return this if this is true
by borisz (Canon) on Mar 05, 2005 at 18:49 UTC
    Thats clear to me, but I do not understand the other part: The question is how to return a value, if it is true and continue otherwise. 
    sub that { 5 }
sub xx{ eval { return that() || die }; 1 }
print xx;
__OUTPUT__
1

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    But the op wants 5 and that the part outside the eval is not executed expect when that is false.
    Boris
[reply]
[d/l]

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