comment on

I don't know the details of what is going wrong, but I suspect that it is due to the attempts of sort to interpret it's first argument as a comparison sub or block.

If you put in an explicit { $a cmp $b } in as the first parameter, all of your tests do the same thing - print "called:array:13".

It's a bit ambiguous actually - should "sort subname" be interpreted as "using this sub as the sort comparison routine, sort the empty list" or "call this sub in list context and sort the results with the default sort comparator".

The behaviour is surprising on the face of it, but I'm not (yet) sure it's wrong. Yet another reason to eschew prototypes (in this case, that of sort) I suppose.

In reply to Re: Sorting result of function call by jbert
in thread Sorting result of function call by Hofmator

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Your skill will accomplish what the force of many cannot
	PerlMonks