Haskell Day4

List and Tuples

Haskell have two important data storage system such as lists and tuples. They are very important thing for Haskell like functions. Lists are implemented by “[ ]” but Tuples with “( )”.The differences between lists and tuples are :

#Tuples size is constant but list are flexible so if we know size of our data we should use tuples for better performance.

#Tuples can be storage different type of data like a Truth value and a string can be in same tuples but list not allow this and return a error which about data types for example a name and a telephone number can be use in a same tuple but they cannot be in a list.

In list and tuples we define elements separating with comas.

list_ex = [1,2,3]

list1_ex = [“ahmet”,”mehmet”,”as”]

tuples_ex = (“john,”,1,True)

main = do

     print(list_ex)

     print(list1_ex)

     print(tuples_ex)

Some mistake coding example

list_ex = [1,”2”,3] – error 1 is a integer but “2” is a char so types are different

we can add elements into a list with using “:”.For example;

list_ex[1,2,3]

main = print(0:list_ex)

program will return 0,1,2,3