Now you read again the "exercise" and realize that's impossible to have as a piutfall ... no, I just used a KISS approach for what I can tell, no pitfalls with one single surrogate could happen by specs.
Best Regards On Tue, Apr 28, 2015 at 1:57 PM, Axel Rauschmayer <[email protected]> wrote: > With Maps, there are less pitfalls. For example: what if you want to use > your version to count words and one of the words is `__proto__`? Most > pitfalls can be fixed via `Object.create(null)`, but Maps are more > straightforward for data (vs. code). > > But your version can be easily adapted to Maps, I like the way you use > `reduce()`. The `|` should be a `||`. > > On 28 Apr 2015, at 14:31 , Andrea Giammarchi <[email protected]> > wrote: > > Not sure why everyone went for the `Map` version when in JS every object > is basically the equivalent of a `Map` already :-) > > ```js > let m = Array.from("mainn").reduce((m,k) => ((m[k] = 1 + (m[k] | 0)), m), > {}); > ``` > > looks a win to me, if you need to check or drop chars from the string I > would probably do it once before passing that to `Array.from` > > Agreed with Kevin this is rather a StackOverflow like question :-) > > Best Regards > > > On Tue, Apr 28, 2015 at 1:19 PM, Kevin Smith <[email protected]> wrote: > >> Another option: >> >> var map = new Map; >> Array.from("mainn") >> .map(c => c.toLowerCase()) >> .forEach(c => map.set(c, (map.get(c) | 0) + 1)); >> >> This kind of question is probably better left for StackOverflow, however. >> >> _______________________________________________ >> es-discuss mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/es-discuss >> >> > > -- > Dr. Axel Rauschmayer > [email protected] > rauschma.de > > > >
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