I just came across a use case where I wanted to create a shallow copy of an
array, while also updating the value at a particular index.
Is it feasible to extend the spread syntax for array literals in a manner
that supports updating values at a given index, similar to how the object
literal syntax supports updating a particular key?
Here's a quick example to illustrate:
const idx = people.findIndex(/* some predicate */);
if (idx >= 0) {
return [
...people,
[idx]: { ...people[idx], /* updates */ }
];
}
I suppose this implies a way to specify indexes in array literals in the
general case, but I can't think of any particularly compelling use cases
w/out the spread operator involved.
Thanks!
--
Jeremy Martin
@jmar777
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