Foundry I Foundry basics. Foundry II Selfdestruct function Foundry III OverFlow situation Foundry IV DelegateCall Foundry V Reentrancy Foundry VI assertEq Foundry VII Inspect Associate Professor Engin YILMAZ (VeriDelisi)

Solidity Tutorial Public | Internal | External | Private Functions in Solidity Public | Internal | External | Private Functions II in Solidity Msg.Sender Account | Contract Account in Solidity Pure and View Functions in Solidity Arrays in Solidity Virtual Override functions in Solidity Interface in Solidity Interface in Solidity…

A smart contract consists of variables that store information and functions that perform actions. Basically, some functions are private and can only be accessed from within the contract, while others are public and can be accessed from outside the contract. (Others are external and internal) This means that applications and…

We try to call other contract function(or variable) from our contract. We learn all the concept about this issue. Firstly you need to learn the visibility in solidity We have two main contracts and each of them assigns one price value to price variable. contract PriceOracle1 {…

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:

We try to use assert equal, less than and greater than expressions for testing our values in solidity code. DSTest We import assert from DSTest Dappsys Test (DSTest for short) provides basic logging and assertion functionality. It is included in the Forge Standard Library. To get access to the functions, import…

In Solidity, the shl and shr commands have the same meaning as in the Yul language. These operators are used to shift the bits of a binary number to the left or right, respectively. Such operations can be useful when working with binary data or performing certain calculations. …

We write “VivaMexicoCabrones” to the memory space with our opcodes and Yul codes. let greet := "VivaMexicoCabrones" Store the string offset in mem[0x00] This is an ABI requirement, 0x20 must be stored at any chosen offset. mstore(0x00, 0x20) Store the length of the string mstore(0x20, 0x12) // 0x12 = 18, length of "VivaMexicoCabrones". Store the string in memory mstore(0x40, greet) Returns the bytes from memory

Mapping storage in solidity ! To get slot index of the mapping’s value under it is given the key. Thank you Jesper! We know that x variable is in the slot 0. What do you think on finding key and value variables in storage ? Mapping includes key and…