Question

What’s the best way to implement a classic curry function in actionscript with a nice syntax?

I’ve tried:

Function.prototype.curry = function() { return 'helloWorld'; }  trace((function():void {}).curry()); 

…approach but that didn’t work.

I guess I’m stuck with a ugly approach such as:

FunctionUtils.curry(fp, ... args) 

???

Answer 1

I must admit I’ve never understood the difference between ‘curry’ and ‘partial’. I use the following function to do more or less what you want to do:

package {   public function partial( func : Function, ...boundArgs ) : Function {     return function( ...dynamicArgs ) : * {       return func.apply(null, boundArgs.concat(dynamicArgs))     }   } } 

Usage examples:

var multiply : Function = function( a : Number, b : Number ) : Number { return a * b; } var multiplyByFour : Function = partial(multiply, 4);  trace(multiplyByFour(3)); // => 12