An Overview of the Ethereum Virtual Machine (EVM)

The core part of the Ethereum blockchain system is EVM. In the past, when explaining the principles of blockchain operation (especially Bitcoin), the analogy of a "distributed ledger" was often used. However, Ethereum not only has the characteristics of a distributed ledger but also introduces smart contracts.

Function Selector in Solidity

When first learning Solidity, I was confused by the terms Function Selector and Function Signature. However, after understanding them in detail, I found they are not that abstract. This article will explain the definitions of these two terms and related issues.

Gas Optimization Basics: Reducing Contract Slot Usage

In this article, we will discuss how data in contracts is stored in the EVM Storage and how to minimize Storage usage to achieve Gas optimization.

以太坊虛擬機 - EVM 概覽

以太坊區塊鏈系統中，最核心的部分就是 以太坊虛擬機（EVM）。過去在解釋區塊鏈運作原理（特別是比特幣）時，常以「分散式帳本」作為比喻。然而，以太坊不僅具備分散式帳本的特性，還引入了智能合約，使程式碼也能被記錄並在區塊鏈上被執行。

Solidity 裡的 Function Selector

在學習 Solidity 的時候，曾對 Function Selector 和 Function Signature 這個詞感到疑惑，不過仔細了解之後，我發現他其實沒那麼抽象，這篇文章會解釋這兩個專有名詞的定義，以及衍生的相關問題。

Gas 優化基礎：減少合約 Slot 的使用量

在這篇文章裡面，我們會討論到合約上的資料是怎麼被儲存到 EVM 的 Storage 內的，以及怎麼盡可能減少 Storage 的使用量，以達到 Gas 優化的效果。