Re: Sorting, recursion, and tail-call optimizations

I wonder if it's related to having a bareword (my_sort) while strict subs is in use? I changed your code slightly:

@data = map { join '/', @$_ } sort {my_sort} @data;
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... and got this error:

Bareword "my_sort" not allowed while "strict subs" in use
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Re^2: Sorting, recursion, and tail-call optimizations by Limbic~Region (Chancellor) on Jan 06, 2006 at 17:01 UTC
kwaping, I doubt it. The barewords error only comes into play when you put a block around my_sort without the parens. It becomes ambigous to parser and the parens are needed to tell it that it is a function call. This doesn't explain (to me at least) why `@data = map { join '/', @$_ } sort { my_sort() } @data; # works @data = map { join '/', @$_ } sort my_sort @data; # breaks` [download] Cheers - L~R	[reply] [d/l]
Re^3: Sorting, recursion, and tail-call optimizations by kwaping (Priest) on Jan 06, 2006 at 17:06 UTC
Well, this is purely speculation, but I was just thinking that maybe there was an error generated that was somehow internal to the sort function and wasn't elegantly passed along to $!. For what it's worth, the error received on OSX was "Bus error".	[reply]
Re^4: Sorting, recursion, and tail-call optimizations by GrandFather (Saint) on Jan 06, 2006 at 18:47 UTC
"Bus error" is likely to translate to "Invalid access": using a bad pointer. DWIM is Perl's answer to Gödel	[reply]