delete
Removes the characters in a substring of this sequence. The substring begins at the specified start and extends to the character at index end - 1 or to the end of the sequence if no such character exists. If start is equal to end, no changes are made.
Return
This object.
Parameters
start
The beginning index, inclusive.
end
The ending index, exclusive.
Throws
if start is negative, greater than length(), or greater than end.