Improving solution of exercise 11 (Arrow Function)

[ShadowManu]

Citing the actual solution in 0.7.0

var inputs = process.argv.slice(2);
    var result = inputs.map((x) => x[0]).reduce((result, x) => result += x);

    console.log(result);

I consider that the equals symbol in the expression result += x is redundant (and maybe even misleading). The first argument to the reduce function is a function that must return the new accumulator... So that expression (when you include the arrow function behavior) is the same as doing result = result + x; return result, making the assignment (not the addition) kinda useless.

P.D: the parenthesis surroinding the x in the map function are optional, but options are ok ;)