performance - How does Swift type inference affect compile and run time? -

var number = 3

var number: int = 3

how using specific types vs type inference affect compile time? has done experiments or math on topic?

does runtime affect @ in anyway?

compile time: in cases, trivial. in example, 3 integer literal; integer literals can adapt use, it's trivial number have type int.

at runtime, there absolutely no difference. both statements 100 percent equivalent.

TSQL