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 ?

Your date is still a String. Yo should assign the return value of ::split to an array var. — Andrew Cheong
– Andrew Cheong, Commented Oct 15, 2020 at 17:07
@AndrewCheong I actually reading this tutorialkart.com/dart/dart-split-string. The String will become list after using split, no? — Tony
– Tony, Commented Oct 15, 2020 at 17:09
Nope, in that reference you also see it returning a list of strings. — Andrew Cheong
– Andrew Cheong, Commented Oct 15, 2020 at 17:12
You are still using the same date object it is immutable use print( date.split('-')[0]); — Xenolion
– Xenolion, Commented Oct 15, 2020 at 17:14

mrgnhnt96 · Accepted Answer · 2020-10-15 17:11:56Z

3

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"

answered Oct 15, 2020 at 17:11

mrgnhnt96

3,9953 gold badges23 silver badges41 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Henok · Accepted Answer · 2020-10-15 17:16:00Z

1

It is 2 because there no change has been done to the variable date( the same without the split), but with split you can access the list like this below

String date = "2020-10-07";
var first = date.split("-").first;//returns the first element of the list
print("split " + first);

answered Oct 15, 2020 at 17:16

Henok

3,4335 gold badges18 silver badges39 bronze badges

Comments

Abhinava B N · Accepted Answer · 2020-10-15 17:42:52Z

1

(Any String).split(Pattern) returns List<String>. Since no operation was done to change the variable (it anyhow can't store List<String>).

You are left with:

Temporarily store the split as @Morgan Hunt and @Henok Suggested
print("split " + date.split("-").first); (I guess you are going to return the first split)

Also data[0] -> is an operation on a string hence you are getting 0th position -> 2

answered Oct 15, 2020 at 17:42

Abhinava B N

1651 silver badge12 bronze badges

Collectives™ on Stack Overflow

Split String in flutter

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related