Re: Converting a character to upper case in string

[Gary Willoughby via Digitalmars-d-learn]

On Friday, 21 September 2018 at 12:15:52 UTC, NX wrote:
How can I properly convert a character, say, first one to upper 
case in a unicode correct manner?
In which code level I should be working on? Grapheme? Or maybe 
code point is sufficient?

There are few phobos functions like asCapitalized() none of 
which are what I want.

Use `asCapitalized` to capitalize the first letter or use 
something like this:


import std.conv;
import std.range;
import std.stdio;
import std.uni;

void main(string[] args)
{
        string input = "noe\u0308l";
        int index    = 2;

        auto graphemes    = input.byGrapheme.array;
        string upperCased = [graphemes[index]].byCodePoint.text.toUpper;

        graphemes[index] = upperCased.decodeGrapheme;
        string output    = graphemes.byCodePoint.text;

        writeln(output);
}