可以参考https://tech.meituan.com/archives 感觉可以优化运行时

[jinliyuelong]

https://tech.meituan.com/archives

核心是
// function.dart
abstract class Function {
/**

• Dynamically call [function] with the specified arguments.
• Acts the same as calling function with positional arguments
• corresponding to the elements of [positionalArguments] and
• named arguments corresponding to the elements of [namedArguments].
• This includes giving the same errors if [function] isn't callable or
• if it expects different parameters.
• Example:
• Function.apply(foo, [1,2,3], {#f: 4, #g: 5});
• gives exactly the same result as
• foo(1, 2, 3, f: 4, g: 5).
• If [positionalArguments] is null, it's considered an empty list.
• If [namedArguments] is omitted or null, it is considered an empty map.
  */
  external static apply(Function function, List? positionalArguments,
  [Map<Symbol, dynamic>? namedArguments]);