http://www.perlmonks.org?node_id=1051200


in reply to Re^2: Byte counts and Seek function
in thread Byte counts and Seek function

That's the utf8 pragma. I know what it does in the posted code: nothing, because there are no non-ASCII characters appearing literally in the source code.

What's the utf8 function in the OP's code do?

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Re^4: Byte counts and Seek function
by AnomalousMonk (Archbishop) on Aug 27, 2013 at 22:50 UTC

    Oops. Visually scanned for it, but didn't see the utf8 function call the first time through. Should have used a highlighting finder!   (Damned human eyes...)

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      utf8::xxx functions can be used without "use utf8". it's documented.
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        Interestingly, the utf8::utf8() function is not documented (Strawberry 5.14.4.1, online 5.18.0), although it exists. What does it do?

        Update: Sorry, I was confused by Perl's autovivification behavior. 

        >perl -wMstrict -le
"print exists &utf8::is_utf8 ? 'yes' : 'no';
 print \&utf8::is_utf8;
 ;;
 print exists &utf8::utf8 ? 'yes' : 'no';
 print \&utf8::utf8;
"
yes
CODE(0x68c66c)
no
CODE(0x68c17c)

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