console.log(process.argv.slice(2).reduce(function(a, x) {
return a + parseFloat(x)
}, 0));
Awesome! Thanks a ton for the suggestion.
Why is that cleaner? A for-loop is one of the basic programming constructs.
A for-loop might be a basic programming construct, but it shouldn't be. Mutation and a control flow construct makes for a much worse outlook to the problem than does recursive application of a function.