I agree this is not about the ES6 spec. But the answers helped because I was trying to understand ES6’s arrow function that is similar to lambdas.
Thanks. From: Andrea Giammarchi [mailto:[email protected]] Sent: Tuesday, April 28, 2015 6:02 PM To: Kevin Smith Cc: Axel Rauschmayer; Radhakrishnan, Mohan (Cognizant); es-discuss list Subject: Re: Merge map values 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]<mailto:[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]<mailto:[email protected]> https://mail.mozilla.org/listinfo/es-discuss This e-mail and any files transmitted with it are for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient(s), please reply to the sender and destroy all copies of the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email, and/or any action taken in reliance on the contents of this e-mail is strictly prohibited and may be unlawful. Where permitted by applicable law, this e-mail and other e-mail communications sent to and from Cognizant e-mail addresses may be monitored.
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