On Thursday, 27 October 2022 at 01:57:15 UTC, Salih Dincer wrote:
You should help the compiler with return type:
I love D, enjoys it when I code...:)
I played a little on the code, and the following is possible and
beautiful:
```d
// If you type auto instead of ubyte as return type, the return
will be char.
ubyte toHexDigit(bool capital = false)(ubyte decimal)
{
static if(capital) enum start = 'A';
else enum start = 'a';
if(decimal < 10)
return cast(char)(decimal + ubyte('0'));
if(decimal < 16)
return cast(char)(decimal - ubyte(10)
+ ubyte(start));
return '\xFF';
}
unittest
{
assert(is(typeof(toHexDigit(9)) == ubyte));
assert(toHexDigit(9) == 57); // '9'
assert(toHexDigit(10) == 97); // 'a'
assert(toHexDigit!true(10) == 65); // 'A'
}
```
SDB@79
