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Postings from September 2015
Aristotle wrote: > In $x ~~ $y with $y eq 42 you cannot tell whether the user wanted the > smartmatch to mean $x == 42 or $x eq 42. You can only tell that when the > user has given you a literal 42 vs a literal '42'. The Last Time Round, someone pointed out that the only really logical way out of this is just to do eq, not ==/eq based on whether the rhs is a number or string. One big complaint was that, if you can write when(42), then $x=42;when($x) should do the same thing. And since Perl 5, unlike Perl 6, does not (or is not meant to) distin- guish between strings and numbers, it just saves everybody a lot of pain to man when(42) to string comparison. It will still cover 90% of the cases where people use it. (But, of course, 110% of statistics are made up on the spot.)Thread Previous | Thread Next