In this guide, we will discuss Erlang lists. The List is a structure used to store a collection of data items. In Erlang, Lists are created by enclosing the values in square brackets.
Following is a simple example of creating a list of numbers in Erlang.
Example
-module(helloworld).
-export([start/0]).
start() ->
Lst1 = [1,2,3],
io:fwrite("~w~n",[Lst1]).
The output of the above example will be −
Output
[1 2 3]
Let us now discuss the various methods available for Lists. Note that the lists library needs to be imported for these methods to work.
| Sr.No | Method and Description |
|---|---|
| 1 | all Returns true if Pred(Elem) returns true for all elements Elem in List, otherwise false. |
| 2 | any Returns true if Pred(Elem) returns true for at least one element Elem in List. |
| 3 | append Returns a new list List3 which is made from the elements of List1 followed by the elements of List2. |
| 4 | delete Deletes an element from the list and returns a new list. |
| 5 | droplast Drops the last element of a List. |
| 6 | duplicate Returns a list which contains N copies of the term Elem |
| 7 | last Returns the last element of the list |
| 8 | max Returns the element of the list which has the maximum value. |
| 9 | member Checks if an element is present in the list or not. |
| 10 | min Returns the element of the list which has the minimum value. |
| 11 | merge Returns the sorted list formed by merging all the sub-lists of ListOfLists. |
| 12 | nth Returns the Nth element of List. |
| 13 | nthtail Returns the Nth tail of the List. |
| 14 | reverse Reverses a list of elements. |
| 15 | sort Sorts a list of elements. |
| 16 | sublist Returns a sublist of elements. |
| 17 | sum Returns the sum of elements in the list. |
Next Topic : Click Here
Pingback: Erlang - left | Adglob Infosystem Pvt Ltd