Slice / copy. Extracts an indexed sequence of unicode characters from the referenced string and copies them into the provided buffer.
The returned slice is built up in the passed string.
index of first character to extract
index of last character to extract
string into which the sliced characters are placed
the sliced characters (either as dchars or as the same type as the referenced string).
See Implementation
Slice / copy. Extracts an indexed sequence of unicode characters from the referenced string and copies them into the provided buffer.
The returned slice is built up in the passed string.