Dart int toStringAsPrecision()
Syntax & Examples

int.toStringAsPrecision() method

The `toStringAsPrecision` method in Dart converts this number to a double and returns a string representation with exactly the specified number of significant digits.

Syntax of int.toStringAsPrecision()

The syntax of int.toStringAsPrecision() method is:

 String toStringAsPrecision(int precision)

This toStringAsPrecision() method of int converts this to a double and returns a string representation with exactly precision significant digits.

Parameters

ParameterOptional/RequiredDescription
precisionrequiredThe number of significant digits.

Return Type

int.toStringAsPrecision() returns value of type String.


✐ Examples

1 String representation with precision 3

In this example,

  1. We assign the value 12345 to the integer variable num.
  2. We convert num to a string representation with precision 3 using the toStringAsPrecision() method.
  3. We print the result to standard output.

Dart Program

void main() {
  int num = 12345;
  String precisionString = num.toStringAsPrecision(3);
  print('String representation of $num with precision 3: $precisionString');
}

Output

String representation of 12345 with precision 3: 1.23e+4

2 String representation with precision 5

In this example,

  1. We assign the value 987654 to the integer variable num.
  2. We convert num to a string representation with precision 5 using the toStringAsPrecision() method.
  3. We print the result to standard output.

Dart Program

void main() {
  int num = 987654;
  String precisionString = num.toStringAsPrecision(5);
  print('String representation of $num with precision 5: $precisionString');
}

Output

String representation of 987654 with precision 5: 98765

3 String representation with precision 7

In this example,

  1. We assign the value 123 to the integer variable num.
  2. We convert num to a string representation with precision 7 using the toStringAsPrecision() method.
  3. We print the result to standard output.

Dart Program

void main() {
  int num = 123;
  String precisionString = num.toStringAsPrecision(7);
  print('String representation of $num with precision 7: $precisionString');
}

Output

String representation of 123 with precision 7: 123.0000

Summary

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