Truth Table

truthtable.js

// usage : truthTable((a,b)=>a&&b, 2)
// 0,0 - 0
// 0,1 - 0
// 1,0 - 0
// 1,1 - 1

function truthTable(question, argcount) {
	var combinations = binaryCombos(argcount)
	for (var combination in combinations) {
		combination = combinations[combination].reverse()
		console.log(combination.toString()+' - ' + +!!truth(question, combination))
	}
}

function truth(question,args) {
	return question(...args)
}

function binaryCombos(n) {
    var result = [];
    for(y=0; y<Math.pow(2,n); y++){
        var combo = [];
        for(x=0; x<n; x++){
            //shift bit and and it with 1
            if((y >> x) & 1)
                combo.push(1);
             else 
                combo.push(0);
        }
        result.push(combo);
    }
    return result;
}