Scala: Remove the last occurrence of a character

Question

I am trying to remove the last occurrence of a character in a string. I can get its index:

str.lastIndexOf(',')

I have already tried to use split and the replace function on the string.

Answer 1

You could use patch.

scala> val s = "s;dfkj;w;erw"
s: String = s;dfkj;w;erw

scala> s.patch(s.lastIndexOf(';'), "", 1)
res6: String = s;dfkj;werw