On Tue, Sep 12, 2000 at 03:26:01PM -0500, Jarkko Hietaniemi wrote:
On Tue, Sep 12, 2000 at 03:24:36PM -0400, abigail(_at_)foad(_dot_)org wrote:
On Tue, Sep 12, 2000 at 01:56:52PM -0500, Jarkko Hietaniemi wrote:
=head2 Toggling UTF-8-ness
on_utf8(STRING)
[INTERNAL] Turn on the UTF-8 flag in STRING. The data in
STRING is B<not> checked for being well-formed UTF-8. Do not
use unless you B<know> that the STRING is well-formed UTF-8.
Returns nothing.
Returning nothing is a waste. Would it be useful to return the previous
value of the UTF-8 flag? Same for off_utf8.
I actually thought exactly the same thing but that leasds into funny
semantics where a false return values signifies a success, and vice versa.
Why is that a problem? The function doesn't return success or failure.
It returns the previous state. One could return 'undef' or '-1' if one
wishes to make a special case for failure. (Already in Perl, index()
returns -1 on failure, and fork() returns undef on failure, while in
both cases, a (false) return value of 0 indicates success).
Abigail
