How can I make this code more 'functional programming' style in Ramda.js / lodash

Question

I have this bit of code:

var fn = function(fn, name) {
   this.commands.add(name, fn);
}.bind(this);

_.mapObjIndexed(fn, this.commandList);

I feel like there's a way to improve this bit of code and make it just one line. I tried many different ways, but I'm new to ramda.js and I might be missing some function, that would make this easier and simpler.

Answer 1

You seem to be looking for the flip function / flip function :

_.mapObjIndexed(_.flip(this.commands.add), this.commandList);

If a .bind(this.commands) for the add function is necessary, you can shorten that using _.bindKey (this.commands, "add") .

If the flipping doesn't work correctly because of the number of arguments, you might needt to throw in _.ary(…, 2) or _.binary(…) .