Foundry Inspect Code
May 29, 2023
How many slots do we need ?
Explain your calculation!
We have 6 different uint variable in solidity programming and each of them has different byte sizes. Logic is simple “every uint8 variable is equal to 1 byte”
uint8 : 1 bytes
uint16: 2 bytes
uint32 : 4 bytes
uint64 : 8 bytes
uint128 : 16 bytes
uint256 : 32 bytes
We start our code:
How many slots do we need ?
We use the following code in foundry. Please remember our contract’s name is Add.
forge inspect Add storage-layout — pretty
We see that only first five variables are in the first(0) slot and last variable goes to second(1) slot.
Ok! This is my illustration.
