Split String in flutter

Question

I using split method to split the String.

String date = "2020-10-07";
date.split("-");
print("split " + date[0]);

I expect will get 2020, but why it return 2 ?

Solution

The reason you are getting 2 is because it is the first position (0) of the string variable date.

When you split a string, it will return a list/array.

String date = "2020-10-07";
final dateList = date.split("-");
print("split " + dateList[0]);
//expected "split 2020"

Comments

[Andrew Cheong]

Your date is still a String. Yo should assign the return value of ::split to an array var.

[Tony]

@AndrewCheong I actually reading this tutorialkart.com/dart/dart-split-string. The String will become list after using split, no?

[Andrew Cheong]

Nope, in that reference you also see it returning a list of strings.

[Xenolion]

You are still using the same date object it is immutable use print( date.split('-')[0]);