Delete mapping values in solidity?

Question

I created mapping address-> uint and i need to make whole mapping -> uints values set to 0 is it possible?

Answer 1

i need to make whole mapping -> uints values set to 0

If you're talking about immediately after creation, they already are.

https://docs.soliditylang.org/en/v0.8.0/types.html?highlight=types#mapping-types

"You can think of mappings as hash tables, which are virtually initialised such that every possible key exists and is mapped to a value whose byte-representation is all zeros, a type’s default value."

If you're talking about later on, after the mapping has been used, then you'll need a way to record which addresses have had non-zero values set.

See Clearing Mappings in the official docs.