Dart calling a member function by function name [duplicate]

问题

This question already has answers here:

Dynamic class method invocation in Dart (3 answers)

Closed 5 years ago.

I am wondering if there is anyway to call a function by its name in dart as in javascript.

I would like to do something as such:

foo["bar"]();

回答1:

I don't want readers to think what the questioner wants isn't possible in Dart, so I'm adding an answer.

You need to use Mirrors to call a method if you have its name available as a string. Here is an example:

import 'dart:mirrors';

class Foo {
  bar() => "bar";
}

void main() {
  var foo = new Foo();

  var mirror = reflect(foo);
  print(mirror.invoke(#bar, []).reflectee); // Prints 'bar'.
}

来源：https://stackoverflow.com/questions/19718821/dart-calling-a-member-function-by-function-name