Question

Is it possible to reference methods using function calls?

I thought I could try something like this:

function map(f,lst) {
// calling map method directly is fine.
    return lst.map(f)
}

function mapm(m,lst) {
// where m is a passed method
    return map( function(x) { return x.m() }, lst)
}

var list_a = [ [1,9],[2,8],[3,7],[4,6] ]
var list_b = mapm(pop,list_a)

>Uncaught ReferenceError: pop is not defined 

Answer 1

Try:

mapm( 'pop', list_a )
...
return x[ m ]();

If you really want to reference the function itself:

mapm( list_a.pop, list_a ); // or Array.prototype.pop
...
return m.apply( x );