Unexpected [red] Any from code_warntype

New to Julia
4

Modules create a new global scope, other ways to create scope produce local scope such as let blocks, for loops, functions,… ect. produce local scopes.

A little more investigation shows that this however appears not the reason you were getting the Any

julia> function f()
         @code_warntype verts[end].index
       end
f (generic function with 2 methods)

julia> f()
Body::Any
18 1 ─ %1 = (Base.getfield)(x, f)::Any                                      │
   └──      return %1

This seems to meant that it is more related to using @code_warntype on an expression rather then a function.

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