orDefault property

T get orDefault

Returns a default value if the object is null. Supported types and their defaults:

• int: 0
• String: ''
• double: 0.0
• Map: {}
• List: []
• Set: {}

For unsupported types, it will throw.

Example usage:

int? a;
print(a.orDefault); // prints 0

String? b;
print(b.orDefault); // prints ''

List? c;
print(c.orDefault); // prints []

Implementation

T get orDefault {
  final value = this;
  if (value == null) {
    return {int: 0, String: '', double: 0.0, Map: {}, List: [], Set: <dynamic>{}}[T] as T;
  } else {
    return value;
  }
}