Code Maintenance & Programming Rules

 This guide outlines essential best practices spanning code style, architectural design, debugging, testing, performance, and portability—all aimed at reducing the long-term cognitive load of code maintenance. 🎨 1. Style Code is written for humans to read, and only incidentally for computers to execute. Variable Naming : Use descriptive names for global variables, and short names for local variables. Precision and Consistency : Use active names for functions (e.g., calculateTotal ). Above all, keep your coding style consistent throughout the project. Structure & Expressions : Use a consistent indentation and brace ( {} ) style to show program structure visually. Use the natural form for expressions. Use parentheses to make the semantics unambiguous. Break up overly complex expressions to keep them clear. Side Effects & Macros : Beware of functions with side effects. Avoid function-like macros; if unavoidable, parenthesize the macro body and arguments carefully. Magic Numbe...

Scratch 3 動畫的基本觀念


動畫其實是由視覺暫留所形成的結果,舉例來說若要製作一個下面的動畫會需要幾張圖片呢?

答案是兩張圖,

更詳細的說明可看動畫概念

而在Scratch裡,腳色本身有造型與本身動作的區別,上述貓咪走路是利用程式積木不停地切換造型來達成動畫效果的:






此外還有其他動畫:「改變角色的位置、改變角色的顏色、改變角色的大小、改變角色的角度等」,這些通稱角色動作動畫,Scratch程式積木如下圖:



Scratch 動畫基礎:貓咪跳舞就是利用造型變化與動作兩種動畫合併的結果。
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