How to Trim a String in Dart - Step by Step Examples

How to Trim a String in Dart ?

To trim a string in Dart, you can use the trim(), trimLeft(), and trimRight() methods of the String class.

In this example,

We create a string named str1 with a value of " Hello World ".
We then use the trim() method on str1 to remove leading and trailing whitespace characters.
Finally, we print the trimmed string.

void main() {
  String str1 = "   Hello World   ";
  String trimmedStr1 = str1.trim();
  print('Trimmed string is: '\$trimmedStr1'');
}

Trimmed string is: 'Hello World'

In this example,

We create a string named str2 with a value of " apple".
We then use the trimLeft() method on str2 to remove leading whitespace characters.
Finally, we print the trimmed string.

void main() {
  String str2 = "   apple";
  String trimmedStr2 = str2.trimLeft();
  print('Trimmed string is: '\$trimmedStr2'');
}

Trimmed string is: 'apple'

In this example,

We create a string named str3 with a value of "banana ".
We then use the trimRight() method on str3 to remove trailing whitespace characters.
Finally, we print the trimmed string.

void main() {
  String str3 = "banana   ";
  String trimmedStr3 = str3.trimRight();
  print('Trimmed string is: '\$trimmedStr3'');
}

Trimmed string is: 'banana'

In this tutorial, we learned How to Trim a String in Dart language with well detailed examples.