Erlang String len Method

Erlang String

This method returns the length of a specific string.

Syntax

len(str)

Parameter

• str −This is the string that needs to determine the number of characters.

Return Value

The return value is the number of characters in the string.

-module(helloworld).　
-import(string,[len/1]).　
-export([start/0]).　
start()　->　
　　　Str1　= "This is a string1"　
　　　Len1　= len(Str1),　
　　　io:fwrite("~p~n",[Len1]).

When we run the above program, we will get the following results.

17

Erlang String