`$1 => a.push($1)` fat arrow function shines mostly in these cases, not sure there's a need for anything else.
`($1, $2, $3) => a.push($2, $3)` Regards On Thu, May 14, 2015 at 5:26 PM, Emanuel Allen <[email protected]> wrote: > That would be great to have an only method on Function.prototype.only > > It can take one to three parameters as arguments: > -Only with using the first argument: > > SomeFunction.only(1); > only allow the first argument in. It target the place holder so: > fn.only(2) allow the two most left argument in. > > -Only with using the first 2 argument: > > SomeFunction.only(1,2); > only allow the second argument in; the second argument target where to > start and the first not how many to let in. So fn.only(2,3); let the third > and fourth argument in. > > -Only with using all arguments placeholder: > > SomeFunction.only(1,2,true); > This will denote that we start from the right and and let the second from > last argument in > > The last parameter is informing if we should start left or right when > choosing the parameters to let in. The default is false; start left to right > > > Internally this could use the function's arguments object to query what to > let in. > > JS4L > > On May 14, 2015, at 11:37 AM, Allen Wirfs-Brock <[email protected]> > wrote: > > > On May 14, 2015, at 8:19 AM, Emanuel Allen wrote: > > Oh yes that is correct since push will push in elements separated by > commas... Still my original problem is that I can't simply do > arr.push(arr2.push); but it doesn't matter since it'll also push the three > parameters into the array as well. > > > exactly, see http://www.wirfs-brock.com/allen/posts/166 > > > > Sent from my iPhone > > On May 14, 2015, at 10:49 AM, Erik Arvidsson <[email protected]> > wrote: > > Still, the callback for forEach is called with 3 arguments; value, index > and the array. > > This is clearly documented in the spec and mdn and other resources. > > On Thu, May 14, 2015, 10:42 Garrett Smith <[email protected]> wrote: > >> On 5/14/15, Emanuel Allen <[email protected]> wrote: >> > Surprise that I can't do arr1.forEeach(arr2.push); >> > >> >> Check that line more carefully. >> >> >> > Will throw an error. >> > >> > Using bind as: >> > >> > push = arr2.bind(push); >> >> Arrays don't have a bind method. >> -- >> Garrett >> @xkit >> ChordCycles.com >> garretts.github.io >> personx.tumblr.com >> _______________________________________________ >> 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 > > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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