typevec

Rust Vec which can contain arbitrary types inrernally casts inputs to Box<UnsafeAny>.

```rust let mut v = TypeVec::new(); assert!(v.is_empty());

// Can push whatever values. v.push(1); v.push(2.2); v.push("xxx"); v.push(vec![1, 2, 3]);

// Give type hint to specify return type. asserteq!(v.get::(0), Some(&1)); asserteq!(v.get::(1), Some(&2.2)); asserteq!(v.get::<&str>(2), Some(&"xxx")); asserteq!(v.get::>(3), Some(&vec![1, 2, 3]));

// getmut asserteq!(v.get_mut::>(3), Some(&mut vec![1, 2, 3]));

// pop asserteq!(v.pop::>(), Some(vec![1, 2, 3])); asserteq!(v.pop::<&str>(), Some("xxx")); asserteq!(v.pop::(), Some(2.2)); asserteq!(v.pop::(), Some(1)); ```