Dart Runes skipWhile()
Syntax & Examples

Runes.skipWhile() method

The `skipWhile` method in Dart returns an iterable that skips leading elements of the original iterable while a specified test function is satisfied.

Syntax of Runes.skipWhile()

The syntax of Runes.skipWhile() method is:

 Iterable<int> skipWhile(bool test(int value))

This skipWhile() method of Runes returns an Iterable that skips leading elements while test is satisfied.

Parameters

ParameterOptional/RequiredDescription
testrequiredA function that takes an integer element as input and returns a boolean value indicating whether the element satisfies the test.

Return Type

Runes.skipWhile() returns value of type Iterable<int>.


✐ Examples

1 Skip lowercase characters

In this example,

  1. We create a sequence of Unicode code points runes from the string 'Hello123'.
  2. We use the skipWhile method with a test function to skip all characters with ASCII values less than 97 (lowercase).
  3. We then print the skipped characters to standard output.

Dart Program

void main() {
  Runes runes = Runes('Hello123');
  Iterable<int> skipped = runes.skipWhile((element) => element < 97);
  print('Skipped characters: $skipped');
}

Output

Skipped characters: (101, 108, 108, 111, 49, 50, 51)

2 Skip digits less than 3

In this example,

  1. We create a sequence of Unicode code points numbers from the string '12345'.
  2. We use the skipWhile method with a test function to skip all digits less than 3.
  3. We then print the skipped digits to standard output.

Dart Program

void main() {
  Runes numbers = Runes('12345');
  Iterable<int> skippedDigits = numbers.skipWhile((element) => element < 51);
  print('Skipped digits: $skippedDigits');
}

Output

Skipped digits: ()

Summary

In this Dart tutorial, we learned about skipWhile() method of Runes: the syntax and few working examples with output and detailed explanation for each example.