CODEWITHSUNDEEP
dart
royco
royco

Reputation: 5529

How can I create a Dart Function from a String?

I have a List<String> of Dart function names. For example, ['func1', 'func2', 'func3']. I want to call each function in the List. How can I go from a String to a Function? The following code does not work, but conceptually it does what I want:

var func1 = Function('func1');

See how it creates a Function from 'func1'.

Edit: I need to deal with Strings because I read the list of functions from a file.

Upvotes: 0

Views: 217

Answers (1)

Vinicius Braz Pinto
Vinicius Braz Pinto

Reputation: 8289

I don't think Dart allows that at the moment (for objects you could use dart:mirrors, but it's currently marked as an unstable library).

An alternative is to use a Map to associate the strings with the functions, as in:

void foo() {
  print('foo');
}

void bar() {
  print('bar');
}

void main() {

  var functions = {
    'foo': foo,
    'bar': bar
  };

  // calling foo()
  functions['foo']();

  // or
  var b = functions['bar'];
  b();

}

Upvotes: 1

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