Arc Forum | It looks like "on" is broken for tables. I'd expect "on" to get the values, lik...

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2 points by kens 6474 days ago | link | parent

It looks like "on" is broken for tables. I'd expect "on" to get the values, like "each", rather than nil.

 arc> (each x (obj k1 'v1 k2 'v2) (prn x))
 v1
 v2
 arc> (on x (obj k1 'v1 k2 'v2) (prn index " " x))
 0 nil
 1 nil

1 point by Jesin 6445 days ago | link

I think that's because on works like this:

 (for index 0 (- len.foo 1) ...)

Because the hash table you used didn't have any entries for 0 or 1, it gave nil.

 arc> (= a (table))
 #hash()
 arc> a!foo
 nil
 arc> (= a!foo 'bar)
 bar
 arc> a!foo
 bar
 arc> a.0
 nil

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