How to Convert a Set of Strings to a Set of Integers in Dart

How to Convert a Set of Strings to a Set of Integers in Dart ?

Answer

To convert a set of strings to a set of integers in Dart, you can use the `map` function along with the `int.parse` method.

✐ Examples

1 Convert Set of Strings to Set of Integers

In this example,

We start by having a set of strings, let's call it `stringSet`.
We use the `map` function on `stringSet` to apply a transformation to each element of the set.
Inside the `map` function, we convert each string element to an integer using the `int.parse` method.
This results in a set of integers, which is what we desired.

Dart Program

Set<String> stringSet = {'1', '2', '3', '4', '5'};
Set<int> intSet = stringSet.map((str) => int.parse(str)).toSet();
print(intSet);

Output

{1, 2, 3, 4, 5}

2 Convert a Set of Strings to a Set of Integers - Handling Non-Numeric Strings

In this example,

If there are non-numeric strings in the set, the `int.parse` method will throw a `FormatException`.
We can handle this by using a try-catch block to catch the `FormatException`.
In the catch block, we can specify a default value or handle the error as needed.

Dart Program

Set<String> stringSet = {'1', '2', '3', 'four', '5'};
Set<int> intSet = {};
for (var str in stringSet) {
  try {
    intSet.add(int.parse(str));
  } catch (e) {
    // Handle non-numeric strings
  }
}
print(intSet);

Output

{1, 2, 3, 5}

Summary

In this tutorial, we learned How to Convert a Set of Strings to a Set of Integers in Dart language with well detailed examples.

◀ Previous Next ▶

Dart Tutorials

Dart How-Tos

How to Convert a Set of Strings to a Set of Integers in Dart

How to Convert a Set of Strings to a Set of Integers in Dart ?

Answer

✐ Examples

1 Convert Set of Strings to Set of Integers

Dart Program

Output

2 Convert a Set of Strings to a Set of Integers - Handling Non-Numeric Strings

Dart Program

Output

Summary

More Dart Sets Tutorials