You get the following warning if you use split in a scalar context to count the number of whitespace delimited tokens in a string.
$_ = 'a b c d e';
print scalar( split );;
Use of implicit split to @_ is deprecated at (eval 6) line 1, <STDIN>
+line 1.
5
$_ = 'a b c d e';
print $n = split;;
Use of implicit split to @_ is deprecated at (eval 9) line 1, <STDIN>
+line 4.
5
I understand the warning, and that it is (mostly?) inappropriate in these cases.
Shouldn't (or couldn't) this warning only be produced in a void context? Or are there scalar context cases that I haven't thought of when it is appropriate?
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