I was looking at some of my Google Apps Script code that uses .some() and I thought (as one does), I wonder if that could be used to reverse a string.
This is about as pure ES6 as I can get it.
const Bruce_SomeReverse = (s, rev = "") => {
s.split("").some((itm, idx, arr) => {
rev = rev + arr[arr.length - 1 - idx];
});
return rev;
}
Using Babel I've converted it to ES3 should anyone want to use it there (like in Google Apps Script).
"use strict";
var Bruce_SomeReverse = function Bruce_SomeReverse(s) {
var rev =
arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
s.split("").some(function(itm, idx, arr) {
rev = rev + arr[arr.length - 1 - idx];
});
return rev;
};
Performance-wise this method is very speedy, in the top 5 (using my speed tester):
Sarah_ForOf 986.973 ticks
Bruce_Recursive2 2664.535 ticks
Bruce_SomeReverse_ES3 3085.19 ticks
Bruce_Recursive1 3209.047 ticks
Bruce_SomeReverse 3312.393 ticks
As seems often to be the case, at least in my V8 instance, the ES3 version is the faster.
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