Protocol for explicit type conversions via init(from:).

Conform when you want callers to write Target(from: source). Most numeric types do this for every other numeric width (see lang/std/num/integer.ks.template). Conformances should be lossless or document their loss behavior; for fallible conversions prefer a separate Result-returning function.

Examples

let i: Int64 = 42; let u = UInt32(from: i); // explicit narrowing conversion