How to remove the last character(s) from String in Dart

Question

This is what I came up with. If there is a better way, let me know.

Just curious, why do some people post their questions(that they already have answers to) and supply an answer immediately ? @live-love — void, May 18 '20 at 19:14
Does this answer your question? [How to remove the last character from a string?](https://stackoverflow.com/questions/7438612/how-to-remove-the-last-character-from-a-string) — Yudhishthir Singh, May 18 '20 at 19:43
That's in java, I was looking for a dart solution and didn't find one. — live-love, May 18 '20 at 20:10
https://stackoverflow.com/questions/55905889/how-to-get-the-last-n-characters-in-a-string-in-dart — , May 18 '20 at 20:38

live-love · Answer 1 · 2020-05-18T20:08:46.727

89

Remove last character:

if (str != null && str.length > 0) {
  str = str.substring(0, str.length - 1);
}

Remove last 5 characters:

if (str != null && str.length >= 5) {
  str = str.substring(0, str.length - 5);
}

edited May 18 '20 at 20:08

answered May 18 '20 at 19:12

live-love

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The test for `str.endsWith('x')` seems not relevant to the question. The question is "remove the last character(s)" not "remove the last character(s) if the string ends with x". – julemand101 May 18 '20 at 19:27
I think removing nothing from "Hi" in the 5-characters-case is rather surprising, but depends on the use case, I quess. – Eiko May 20 '20 at 11:33

Yudhishthir Singh · Answer 2 · 2020-05-18T21:13:56.937

The answer that you have given would suffice the problem, just wanted to share this another way to remove the last element. Here I am using removeLast function provided by the dart library.

This function can be used on any list to remove the last element.

void main() {
  String x = "aaabcd";
  List<String> c = x.split(""); // ['a', 'a', 'a', 'b', 'c', 'd']
  c.removeLast(); // ['a', 'a', 'a', 'b', 'c']
  print(c.join()); //aaabc
}

How to remove the last character(s) from String in Dart

2 Answers2