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Erlang Tutorial

Erlang List droplast Method

Erlang List

Remove the last element from the List. The list must not be empty, otherwise the function will crash and produce a function_clause clause.

Syntax

droplast(List1)

Parameter

  • List1 −Value List.

Return Value

Return a new list without the last element.

For example

-module(helloworld).　
-import(lists,[droplast/1]).　
-export([start/0]).　
start()　->　
　　　Lst1　=　[1,2,3],　
　　　Lst2　=　droplast(Lst1),　
　　　io:fwrite("~w~n",[Lst2]).

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

[1,2]

Erlang List

Network Programming in Erlang