Question regardin find_first_of

[shawnim]

First of all, thanks for this great library!
This is not a bug but rather my own user error that I am hoping you can clarify.
I'm trying to call find_first_of passing a utf8_string as the first parameter.
This generates the following error:
error: no matching function for call to ‘utf8_string::find_first_of(utf8_string&, int&)’
int found_pos = haystack.find_first_of(needle, at_pos);
^
In file included from Phonemizer.cpp:8:0:
tinyutf8.h:1728:12: note: candidate: utf8_string::size_type utf8_string::find_first_of(const value_type*, utf8_string::size_type) const
size_type find_first_of( const value_type* str , size_type start_codepoint = 0 ) const ;
^~~~~~~~~~~~~
tinyutf8.h:1728:12: note: no known conversion for argument 1 from ‘utf8_string’ to ‘const value_type* {aka const char32_t*}’

Can you tell me the correct usage and/or how I can get a char32_t* from my utf8_string?
Thanks!
Shawn

[shawnim]

I figured out that I could use find instead of find_first_of. So I'll close this issue.

[DuffsDevice]

Hi Shawn,

Sorry for the late reply. Find_first_of currently expects a literal of type char32_t (as you already figured out). You may get a literal through e.g. "0123456789"U. If you just happen to have a dynamic set of codepoints that you want to use find_first_of with (it seems you do), you can get a char32_t* with utf8_string::to_wide_literal().

Does that help you?

Cheers
Jakob

PS: I might add the overload that you are looking for to the library once I have the time to. What keeps me from doing that at the moment, is that all the find_* functions would need to receive that overload and I don't have an idea yet on how to quickly search for any of the codepoints in an utf8_string without much (heap-)memory overhead. So yeah, I may figure that out...