How Swift Vars automatically convert to My Any Type - swift

Question

I was doing some research on AnyXXX struct like AnyHashable, then I write a similar container named MyAnyHashable.
There's some issues
when I using the original AnyHashalbe is Swift, it works fine:
func usingAppleAnyHashable() {
var dict = Dictionary<AnyHashable, Any>()
// using literal as key always works
dict[1] = 1
dict["efg"] = "efg_value"
// using some var as key still works
let any1 = 100
let any2 = "abc"
dict[any1] = 100
dict[any2] = "abc_value"
print(dict)
}
it can automatically convert Int's var into AnyHashable, what a Magic!
let any1 = 100
let any2 = "abc"
dict[any1] = 100
dict[any2] = "abc_value"
Then, I using MyAnyHashable as the Key's Type
func usingMyAnyHashable() {
var dict = Dictionary<MyAnyHashable, Any>()
// using literal as key always works
dict[1] = 1
dict["efg"] = "efg_value"
// it show errors: Cannot convert value of type 'Int' to expected argument type 'MyAnyHashable'...
let any1 = 100
let any2 = "abc"
dict[any1] = 100
dict[any2] = "abc_value"
print(dict)
}
I must write like this to manually create a MyAnyHashable instance
dict[MyAnyHashable(any1)] = 100
What is the Magic in Apple's AnyHashable?
How to make it automatically convert non-Literal var into MyAnyHashable?
Here is MyAnyHashable implementation, I even wrote a ExpressibleByXXXXLiteral which can automatically transform literalType to MyAnyHashable.
struct MyAnyHashable : Hashable, Equatable {
private let baseHash: Int
private let base: Any
init<H: Hashable>(_ base: H) {
self.base = base
self.baseHash = base.hashValue
}
func hash(into hasher: inout Hasher) {
hasher.combine(self.baseHash)
}
static func == (lhs: MyAnyHashable, rhs: MyAnyHashable) -> Bool {
return lhs.hashValue == rhs.hashValue
}
}
extension MyAnyHashable : ExpressibleByStringLiteral, ExpressibleByIntegerLiteral, ExpressibleByFloatLiteral {
typealias StringLiteralType = String
init(stringLiteral value: StringLiteralType) {
self.init(value)
}
typealias IntegerLiteralType = Int
init(integerLiteral value: IntegerLiteralType) {
self.init(value)
}
typealias FloatLiteralType = Float
init(floatLiteral value: FloatLiteralType) {
self.init(value)
}
}
screenshots