Thank you for finding these anomolies!
> user=> (-<> 0 [1 <> <>])
> [1 0]
>
>
This case is undefined behavior because only one <> point is allowed.
> user=> (-<> 0 {1 <> 2 <>})
> IllegalArgumentException No value supplied for key: 2
> clojure.lang.PersistentHashMap.createWithCheck (PersistentHashMap.java:89)
>
>
Again, only one <> point is allowed. So undefined behavior is expected
behavior in that case.
> user=> (-<> 0 {<> 1})
> CompilerException java.lang.RuntimeException: Unable to resolve symbol: <>
> in this context, compiling:(NO_SOURCE_PATH:16)
>
>
This is an interesting use case I hadn't considered. I will play around a
bit with that and try to find out why it doesn't just work.
user=> (-<> 0 '(<>))
> (<> 0)
user=> (-<> 0 [<>])
> CompilerException java.lang.RuntimeException: Unable to resolve symbol: <>
> in this context, compiling:(NO_SOURCE_PATH:24)
These two are an interesting case that *should* be valid (I know why this
one wouldn't work because of how I wrote it, easily fixable). I just
hadn't thought of that.
;; I guess this one is expected, although it would be nice if it worked.
user=> (-<> 0 '(1 (1 <>)))
> (1 (1 <>) 0)
This is invalid. I guess it would be nice but walking the form would
complicate matters. :)
Thanks again for finding the two issues mentioned above!
Rob
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