Eli Bendersky's website Quick, what does the following print:
print "Hellon"; print reverse "Hello";
No, it's not:
Hello olleH
But:
:
Hello Hello
Why ? Well... as many functions in Perl, reverse suffers from the "list context caveat" (TM). It's a tricky concept in Perl, and I stumble upon it not for the first time (although I'm not a newbie, it still bites me). The correct way would be:
print scalar reverse "Hello";
This only happens with print, btw. If you assign a reverse to a variable, it won't happen. This is because print expects a list, which tells reverse that it now must return a value in list context, which makes it reverse the order of the list it got, and not the characters in it !