Lcd wrote:
> [...]
> > > > > One more thing: adjusting the result of jsondecode() to contain
> > > > > only "standard" values involves deep traversal, which is not
> > > > > trivial. Actually, it's pretty hard to get right.
> > > >
> > > > Example?
> > >
> > > Anything nested would do:
> > >
> > > :echo jsondecode('[{"a":true, "b":false}, null, {"foo": true, "bar":
> > > true, "baz": null}]')
> > > [{'a': true, 'b': false}, null, {'foo': true, 'baz': null, 'bar': true}]
> > >
> > > Replacing all true, false, and null with "plain" 0, 1, and ''
> > > means traversing the leaves of this.
> >
> > When would that be needed? v:true and v:false can be used in an
> > expression just like one and zero. I don't know what to replace
> > v:null with, it must be recognized to know there is nothing there. In
> > this example an empty dict is probably what you want, but that's not a
> > generic solution.
>
> There are situations where what is needed is to extract different
> things from a large JSON and do something with the values. Having to
> make a difference between, say, v:true and 1 would propagate all over
> the place, because:
>
> :echo v:true == 1
> 1
>
> but
>
> :echo [v:true] == [1]
> 0
This is unexpected, but the same happens for other items with a similar
value but different type:
:echo 1.0 == 1
1
:echo [1.0] == [1]
0
Perhaps we should change that as well? It is related to, for example,
index():
echo index([0, v:false], v:false)
echo index([1.0, 1], 1)
Should these return 0 or 1?
We can make it work differently for when using ==. That sort of makes
sense, even though it's not completely consistent.
> and
>
> :echo [v:true] is [1]
> 0
That is correct, even:
:echo [1] is [1]
0
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