So Vec is a type. And i32 is also a type.† † The proof is left as an exercise to the reader. But not Vec. What is it exactly? In the parlance of type systems, Vec is a type constructor. You can think of it as fn(type) - type, where it accepts a type, i.e. i32, and spits out a new type Vec. Let’s consult the comparison table:
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Early puberty provides a biological link between childhood economic disadvantage and teenage emotional struggles in girls