The method returns the sub string from the left of the string based on the number of characters.
str1 − This is the string from which the sub string needs to be extracted.
Number − This is the number of characters which need to be present in the substring.
Returns the sub string from the original string based on the left hand side of the string and the number.
-module(helloworld). -import(string,[left/2]). -export([start/0]). start() -> Str1 = "hello World", Str2 = left(Str1,2), io:fwrite("~p~n",[Str2]).
When we run the above program, we will get the following result.