I agree, it's very annoying to have to write it !(x in y). I've been wanting this operator for a very, very long time.
If there is interest for !in, I think !instanceof deserves to be included too. Le jeu. 28 juin 2018 à 18:19, T.J. Crowder <[email protected]> a écrit : > On Thu, Jun 28, 2018 at 5:14 PM, Tobias Buschor <[email protected]> > wrote: > > I dont like to write: > > if ( !('x' in obj) && !('y' in obj) ) { > > doit() > > } > > > > I was even tempted to write it that way: > > if ('x' in obj || 'y' in obj) { } else { > > doit() > > } > > There's > > ```js > if (!('x' in obj || 'y' in obj)) { > doit() > } > ``` > > That said, I've wanted !in many a time, in a minor sort of way... > > -- T.J. Crowder > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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