How many times have you heard this piece of database folklore: "Always use EXISTS instead of IN because it's significantly faster"?

Vài dòng ghi chú để vừa chứng minh mình có đọc vừa chứng minh là mình đọc xong rồi cũng hơi hiểu hiểu chứ ko phải đọc xong quên hết

Vốn có thể rời đi trễ một chút, không ngờ lại quá vội vàng.

To the uninitiated, JavaScript is a monolith—a single, ubiquitous language that powers the web. But as those of us who have spent the last decade debugging "Heisenbugs" across distributed systems know, the reality is far more fractured. JavaScript is not a single entity; it is a collection of feuding city-states governed by a common trade agreement called ECMAScript.

If Angular 18 was about the "Zoneless" foundation, Angular 19 is all about refining the developer experience through enhanced reactivity and template power. With several experimental features from previous versions moving to stable and the introduction of game-changing new APIs, Angular 19 is arguably the most "productive" version yet.

Welcome back, fellow veteran. If you’ve been in this industry for eight years or more, you’ve seen it all: fighting float: left, the rise and fall of jQuery, the "holy war" of the Virtual DOM, and the chaos of AngularJS (v1).