Coercers as parameter parametarizers give wild results

[zoffixznet]

No idea if such a thing can be made to work, at all, but if it can't it should throw instead of binding an Int to a @- param.

<Zoffix_> m: -> Int() @v { dd @v }(Array[Any].new: 1, 2, 34, 6)
<camelia> rakudo-moar 645eeb52d: OUTPUT: «4␤»
<Zoffix_> m: -> Int() @v { dd @v.^name }(Array[Any].new: 1, 2, 34, 6)
<camelia> rakudo-moar 645eeb52d: OUTPUT: «"Int"␤»

[vrurg]

Works as expected with the latest coercion semantics.

⇒ raku -e '-> Int() @v { dd @v }(Array[Any].new: 1, 2, 34, 6)'
Array[Any].new(1, 2, 34, 6)

Yet, because @v gets bound, not assigned, to the function argument, no coercion is applied. So, if any of the argument array elements is not an Int, it will be preserved.

Not closing the ticket now because the situation about non-coerced elements perhaps worth considering changing it.