list of programming languages
A regular view is a stored query. Every time it is referenced, the database re-executes the query against the underlying tables. The result is always current, but the cost is paid on every read. A materialized view is a stored result. The query runs once, at the creation, and its output is written to disk…
Most of the popular npm packages ship their own TypeScript declarations, or have an @types package on DefinitelyTyped. But a library that is new, obscure, or written by an author who does not use TypeScript often ships neither. When you import it, the compiler sees any for every export, and the type safety is lost….
Immutability in Dart is not a language default—it is an architectural choice enforced by discipline and tooling. A mutable object can change at any time, which means every reference to it is a potential surprise. An immutable object, once created, never changes; a “modification” produces a new object, and the old one remains valid for…
For most of JavaScript’s life, it ran only in the browser. Node.js changed that. It takes the V8 engine — the same one inside Chrome — and wraps it with an environment that can read files, open sockets, spawn processes, and run on servers. Suddenly JavaScript could do what PHP, Python, and Ruby did. Node…
A request enters your API, calls a database, invokes a payment service, and returns. Something is slow, but the logs tell you nothing useful—just timestamps and messages from different services with no way to connect them. Distributed tracing solves this by attaching a shared identifier to every operation across every service, so a single request…
Traits in Rust can be parameterized in two ways: with generic type parameters on the trait itself, or with associated types declared inside the trait body. Both allow an implementor to specify a concrete type, and in simple cases they look interchangeable. The difference is semantic: a generic parameter is an input that the caller…
A transaction is a group of SQL statements that execute as a single unit. Either all of the statements succeed and their changes are permanently written, or one of them fails and every change is undone as if nothing happened. There is no partial state: the database moves from one consistent state to another, and…
Error handling in TypeScript has a specific problem: JavaScript can throw anything — a string, a number, an object, an Error — and the type system does not track what a function throws. There is no throws clause, no error channel in the return type. The try/catch block’s catch variable is unknown in strict mode,…
Clean Architecture is a way of organizing code so that the business logic—the rules that define what your application actually does—is isolated from the tools and frameworks that deliver it. In Dart, this matters because the same domain logic might need to run in a Flutter app, a command-line tool, a server, or a test…
Every Node project has a package.json. It’s the manifest — the file that describes your project, lists its dependencies, and defines scripts. Around it, a package manager installs, updates, and resolves those dependencies. Three tools dominate the ecosystem: npm, yarn, and pnpm. They do the same job with different trade-offs. Understanding package.json and how the…