You can’t do it with the built-in Func types, but it’s easy enough to create your own custom delegate type and use it in a similar way: _messageProcessing.Add(“input”, (x, y, z) => “output”); _messageProcessing.Add(“another”, (x, y, z) => “example”); // … delegate string DispatchFunc(DynamicEntity first, DynamicEntity second, IEnumerable<DynamicEntity> collection); Dictionary<string, DispatchFunc> _messageProcessing;
It is not possible to recur on anonymous functions in Elixir. Erlang 17 (currently a release candidate) adds this possibility to Erlang and we plan to leverage it soon. Right now, the best approach is to define a module function and pass it around: def neural_bias([i|input],[w|weights], acc) do neural(input,weights,i*w+acc) end def neural_bias([], [bias], acc) do … Read more
You need a closure. float tot = std::accumulate(weights.begin(), weights.end(), 0); std::transform(weights.begin(), weights.end(), [tot](float x)->float{return(x/tot);}); In this case tot is captured by value. C++11 lambdas support capturing by: value [x] reference [&x] any variable currently in scope by reference [&] same as 3, but by value [=] You can mix any of the above in a … Read more
The first uses jQuery to bind a function to the document.ready event. The second declares and immediately executes a function.
They work exactly the same. It’s only in how you are able to run them that they are different. So example #1 you could call again at any point with abc();. For example 2, you would either have to pass it as a parameter to another function, or set a variable to store it, like … Read more
You can give the function a name, even when you’re creating the function as a value and not a “function declaration” statement. In other words: (function foo() { foo(); })(); is a stack-blowing recursive function. Now, that said, you probably don’t may not want to do this in general because there are some weird problems … Read more
Trying to do everything via the command line without saving functions in m-files may be a complicated and messy endeavor, but here’s one way I came up with… First, make your anonymous functions and put their handles in a cell array: fcn1 = @() …; fcn2 = @() …; fcn3 = @() …; fcnArray = … Read more
As described in the link you posted. You can use Y-combinator. Here is example: scala> def fix[A,B](f: (A=>B)=>(A=>B)): A=>B = f(fix(f))(_) fix: [A,B](f: ((A) => B) => (A) => B)(A) => B scala> val fact = fix[Int,Int](f => a => if(a<=0) 1 else f(a-1) * a) fact: (Int) => Int = <function1> scala> fact(12) res0: … Read more
Anonymous functions are useful when using functions that require a callback function like array_filter or array_map do: $arr = range(0, 10); $arr_even = array_filter($arr, function($val) { return $val % 2 == 0; }); $arr_square = array_map(function($val) { return $val * $val; }, $arr); Otherwise you would need to define a function that you possibly only … Read more