lajosdeme

Smart contract development principles

Principles for securely building smart contract systems collaboratively or individually.

Security first

The number one thing we are focusing on and optimizing, before anything else, is security. This means that before adding a line of code both the granular and the system-wide implications of that change must be deeply understood.

It is recommended to always use tools like the Olympix VSCode extension, and regularly run security analyzers like Mythril, Slither, etc.

The whole system must be regularly examined for complex, multi-step attacks like oracle or price manipulation.

lajosdeme

lajosdeme

#!/bin/bash

# Simple script to preapre a project for smart contract development with hardhat.
# author: lajosdeme
# This will create an npm project, create folders for contracts, tests and scripts, and install the following dependencies:
# · hardhat
# · @openzeppelin/contracts
# · @nomiclabs/hardhat-ethers
# · @nomiclabs/hardhat-waffle
# · chai

lajosdeme

final class Person {
    var name: String
    
    init(name: String) {
        self.name = name
    }
}

struct PersonCOW {
    private var person: Person

lajosdeme

func insertionSort <T: Comparable>(array: inout [T]) {
    if array.isEmpty {
        return
    }
    
    for i in 1..<array.count {
        var pos = i
        let temp = array[i]
        
        while pos > 0 && array[pos - 1] > temp {