It's possible, but the ability to optionally destructure is what would make this feature worth it - I feel this should wait for pattern matching to be added first, though.
On Tue, Aug 21, 2018 at 11:10 Jordan Harband <[email protected]> wrote: > ``` > { > let a = b(); > if (a) { > c(a); > } > } > ``` > > On Tue, Aug 21, 2018 at 10:54 AM, Ali Rahbari <[email protected]> wrote: > >> while it's possible to use let keyword in for loop parentheses, it's not >> possible to use it in if parentheses. >> >> There are two use cases for this: >> >> *1- if (let a = b()) a.c();* >> this can be done using optional chaining which is proposed: >> b()?.c(); >> >> *2- if (let a = b()) c(a);* >> this or more sophisticated patterns can't be done in any way other than >> this: >> let a = b(); >> if (a) c(a); >> >> the problem here beside more line of codes, is *a *is defined outside of >> if scope. >> >> >> _______________________________________________ >> 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 >
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