Insert a character to a specified position in the slice.
Enlarges the slice by 1 char. Note that the slice can only extend up to the current position in the Reader buffer.
The character to insert.
Position to insert the character at in code units, not code points. Must be less than slice length(); a previously returned length() can be used.
See Implementation
Insert a character to a specified position in the slice.
Enlarges the slice by 1 char. Note that the slice can only extend up to the current position in the Reader buffer.