Blog
-
Level Up Your Observables: RxJS Pipeable Operators Made Easy
3CommentsPipeable operators like filter, map, tap, debounceTime, and catchError, complete with examples. RxJS Operators: Building Blocks for Reactive Programming RxJS operators are powerful functions that work with Observables to transform, filter, combine, and manipulate data streams. Understanding these operators is key to mastering reactive programming in JavaScript. 1. filter Example TypeScript 2. map Example TypeScript…
-
Level Up Your Observables: RxJS Creation Functions Made Easy (Step-by-Step)
RxJS offers various creation functions to build and manage observable sequences. Here’s an explanation of some popular ones: 1. of(): Emits a sequence of specified values synchronously. Example: TypeScript 2. from(): Converts various data sources into observables: 3. interval(): Emits a sequence of numbers periodically with a specified time interval. Example: TypeScript 4. timer(): Emits…
-
React Performance Tuning: Mastering useMemo for Better User Experience
In React, useMemo is a powerful hook that helps optimize performance by memoizing, or caching, the results of expensive calculations. This prevents unnecessary re-renders, ultimately leading to a smoother user experience. What is memoization? Think of it like remembering a phone number once you’ve looked it up. Memoization stores the result of a function call…
-
RxJS Deep Dive: Unraveling the Mysteries of Subject and BehaviorSubject
A comprehensive response detailing the differences between Subject and BehaviorSubject in RxJS: Subject: BehaviorSubject: Key Differences: Feature Subject BehaviorSubject Initial value No initial value Requires an initial value when created Emitted values to new subscribers Only subsequent values Current value and subsequent values Error and completion Can be manually emitted via error and complete Propagated automatically to subscribers…
-
Supercharge Your React Apps: useEffect() and useContext() Hooks in Action
Here’s an explanation of useEffect() and useContext() hooks in React, with examples: 1. useEffect() Hook: JavaScript Key points: Example: JavaScript 2. useContext() Hook: JavaScript Key points: Example: JavaScript