Just as a heads up, this has come up plenty of times before, both as a function and (usually) syntax: https://www.google.com/search?q=site%3Aesdiscuss.org+pick
I'm good with it being a built-in function, but it's harder to justify using syntax apart from an easier time building up the relevant type ICs. ----- Isiah Meadows [email protected] www.isiahmeadows.com On Wed, Jul 25, 2018 at 5:45 PM, Mikkel Davis <[email protected]> wrote: > I've seen proposals for syntax additions that give functionality similar to > lodash's "pick" utility. But I think it may be more appropriate to add it as > an Object utility in the same vein of `Object.assign`, `Object.keys`, > `Object.values`. After a quick search, I was surprised to not find an > existing proposal like this. Why would that be? > > For me, this isn't just one of those "huh, that's a neat lodash util that > would be nifty to have natively." The codebase I work on most often already > has lodash everywhere, and I have found myself utilizing _.pick frequently, > e.g. mapping or passing down portions of React state or props. I really > think is common enough that it justifies addition to the spec. > > ```js > const person = { > first: 'Marie', > last: 'Curie', > age: 51, > address: 'Grenoble, France', > }; > > Object.pick(person, ['first', 'age']); // {first: "Marie", age: 51} > ``` > > The only other concise way to do this I can think of, using latest ES is > `(({first, age}) => ({first, age}))(person)`, which is quite undesirable, > for a variety of reasons. > > Another name that might be nice is `Object.slice`. > > --- > Mikkel R. Davis > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
