There's any way I could implement a generic proc that can receive a proc with
`{.nimcall.}` or `{.closure.}` calling convention? I now that if I specify the
type as `{.closure.}` it can accept `{.nimcall.}` but this way is way more
inneficient and is stored with two words. What I want is some way to have a
struct like this:
type FilterIterator[I,F,A] = object
inner: I
predicate: F
Run
Where `F` is the type of a proc that if passed a `{.nimcall.}` will be stored
efficiently. I don't know how to write the function to construct this object.
Sorry for my english.
