Simplified syntax based on pampy.js

[jarble]

I found a library called pampy.js that provides a very concise syntax for pattern matching. If this library were translated into PHP, then functional-php's pattern matching might look like this, using a variadic function to match patterns instead of an array:

function fib($n) {
    return match($n,
        1, 1,
        2, 1,
        _, function($x){ return fib($x - 1) + fib($x - 2); }
        //each underscore is passed as an argument to a function, so there can be several 
    );
}

Would it be possible to translate pampy.js to PHP so that the patterns could be matched in this way?

[krtek4]

The idea is interesting and it probably could be made. The only thing I see posing issues is the underscore.

I don't have much time right now to work on that, maybe you'd like to propose a PR ?

[jarble]

@krtek4 The underscores simply match each parameter of the anonymous function, in the same order that the underscores appear in. So it's also possible to match patterns in arrays, like match($n,[_,"+",_],function($a,$b){return $a + $b;}).