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How to Fix “Unable to Expand ZIP File” Errors on macOS When Downloading from SharePoint or OneDrive

How to Fix “Unable to Expand ZIP File” Errors on macOS When Downloading from SharePoint or OneDrive

Downloading large collections of files from SharePoint or OneDrive often results in a single ZIP archive. While convenient in theory, many macOS users encounter the dreaded error message: “Unable to expand .zip (Error 79 – Inappropriate file type or format)” This happens when macOS’s built-in Archive Utility struggles with certain

Duck Typing: Why Behavior Sometimes Matters More Than Type

Duck Typing: Why Behavior Sometimes Matters More Than Type

In the world of software engineering, developers often debate whether type safety or flexibility should take priority. One concept that sits at the heart of this discussion is duck typing. The term itself is drawn from an old saying: “If it looks like a duck, swims like a duck, and

Why instanceof Promise Is Not a Reliable Check in JavaScript

Why instanceof Promise Is Not a Reliable Check in JavaScript

When working with asynchronous programming in JavaScript, it is tempting to check whether a value is a Promise using instanceof Promise. At first glance, this seems logical—after all, promises are the foundation of async/await, so why not verify them directly? But here’s the catch: instanceof Promise is

When (and Why) to Stick With React — Even If Solid Looks Better

When (and Why) to Stick With React — Even If Solid Looks Better

There’s no denying it: Solid is better than React in several technical aspects. It boasts fine-grained reactivity, smaller bundle sizes, and better runtime performance out of the box. If you compare benchmarks, Solid almost always comes out ahead. But here’s the catch: being technically better does not automatically

Why Developers Still Write if/else When match Feels Better

Why Developers Still Write if/else When match Feels Better

When you first discover functional-style pattern matching in JavaScript or TypeScript — something like: match({ A: (a) => handleA(a), B: (b) => handleB(b), })(props) —it’s hard not to wonder: why are people still writing endless if/else or switch statements? The elegance of a declarative match approach can

TypeScript, Discriminated Unions, and the “as” Prop Problem

TypeScript, Discriminated Unions, and the “as” Prop Problem

If you’ve been working with TypeScript for a while, you’ve probably run into situations where the compiler feels a little too conservative. One common case is when working with discriminated unions and destructuring. It looks neat at first glance: type Action = | { kind: 'A'; payload: number } | { kind:

Measuring Progress with Percentages in JavaScript: A Practical Guide

Measuring Progress with Percentages in JavaScript: A Practical Guide

When building applications that track user progress—such as to-do lists, learning platforms, or project management dashboards—you’ll often need to calculate the percentage of tasks completed. This percentage provides a clear, user-friendly way to communicate progress at a glance. Let’s break down the logic, explore how to