Dart RegExp toString()
Syntax & Examples

RegExp.toString() method

The `toString` method in Dart's `RegExp` class returns a string representation of the `RegExp` object.

Syntax of RegExp.toString()

The syntax of RegExp.toString() method is:

 String toString()

This toString() method of RegExp returns a string representation of this object.

Return Type

RegExp.toString() returns value of type String.


✐ Examples

1 String Representation of RegExp for Matching Words

In this example,

  1. We create a regular expression `regex` to match words.
  2. We print the string representation of the regex using the `toString` method.

Dart Program

void main() {
  RegExp regex = RegExp('hello');
  print('String representation of regex: ${regex.toString()}');
}

Output

String representation of regex: RegExp/hello/

2 String Representation of RegExp for Matching Numbers

In this example,

  1. We create a regular expression `regex` to match numbers.
  2. We print the string representation of the regex using the `toString` method.

Dart Program

void main() {
  RegExp regex = RegExp('[0-9]+');
  print('String representation of regex: ${regex.toString()}');
}

Output

String representation of regex: RegExp/[0-9]+/

3 String Representation of RegExp for Matching Alphabets

In this example,

  1. We create a regular expression `regex` to match alphabetic characters.
  2. We print the string representation of the regex using the `toString` method.

Dart Program

void main() {
  RegExp regex = RegExp('[a-zA-Z]+');
  print('String representation of regex: ${regex.toString()}');
}

Output

String representation of regex: RegExp/[a-zA-Z]+/

Summary

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