What is Python's *Args and **kwargs equivalent in Rust

Question

What is Python's *Args and **kwargs equivalent in Rust

def main(*args, **kwargs):
  pass

Answer 1

Those are variadic arguments and Rust has no direct equivalent. This is because Rust is extremely strongly typed and must know exactly what types will be passed to a function.

Depending on what you're doing, you'd probably define a function that takes collections; Vec for *args and HashMap for **kwargs. But everything in each collection must be of the same type; a Vec of integers, a HashMap of pairs of strings, etc.