Re^4: Understanding Perl context (removing duplicates from array)

Hmmm... Hadn't thought about that.

But in the specific case of the OPed code, replacing undef with 0 (or, indeed, with 1 or any other value) would make no difference: you still end up with a hash of unique keys.

And in the general case, if code did depend on the difference between undef and 0 as values, would not this dependence be underscored by the explicit use of undef as the initializer (reinforced, one would hope, by a comment) rather than the more general () empty list?

Give a man a fish: <%-(-(-(-<

Comment on Re^4: Understanding Perl context (removing duplicates from array) Select or Download Code

Replies are listed 'Best First'.
Re^5: Understanding Perl context (removing duplicates from array) by LanX (Saint) on Apr 19, 2015 at 14:47 UTC
Sorry, I've had too many coworkers in the past using broken copy and paste code and justifying that the cargo cult worked so far. ("Of course it's well tested! I ran it once and nothing bad happened ... " ) Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]