Reactive programming: Reactive programming is a programming paradigm that allows developers to build systems that react and respond to changes in the environment. It involves using asynchronous data streams, called observables, and manipulating them using operators to perform various operations. Measurement of this skill in the test helps assess a candidate's ability to work with reactive programming concepts and apply them effectively in their code.
Observables: Observables are a fundamental concept in reactive programming. They represent streams of data that can be observed over time. By subscribing to observables, developers can react to changes in the stream and perform actions accordingly. Measuring this skill in the test helps evaluate a candidate's understanding of observables and their ability to work with them to handle asynchronous events and data.
Operators: Operators in reactive programming are functions that manipulate observable streams and produce new desired output streams. They enable developers to transform, filter, combine, and perform various other operations on observables. Measurement of this skill in the test helps assess a candidate's proficiency in using different operators and their understanding of how to apply them to solve real-world problems effectively.
Subject: A subject is a special type of observable that allows both the emission and consumption of values. It acts as both an observer and an observable, providing a bridge between different parts of an application. Measurement of this skill in the test helps evaluate a candidate's comprehension of subjects and their ability to use them for communication between components or different parts of a system.
Transformation operators: Transformation operators in RxJS enable developers to transform the data emitted by an observable stream into a different format or structure. They help simplify data manipulation and enable logical transformations before consuming the data. Measurement of this skill in the test helps assess a candidate's capability to use transformation operators effectively and understand their diverse range of applications.
Combination operators: Combination operators in RxJS allow developers to combine multiple observables into a single observable stream. They provide various strategies for combining and merging data from multiple sources, enabling powerful composition and coordination of async operations. Measurement of this skill in the test helps evaluate a candidate's ability to work with combination operators and effectively manage complex data flows and dependencies.
Error handling: Error handling in RxJS involves dealing with errors that may occur during asynchronous operations. It includes error propagation, catching, and handling mechanisms to ensure graceful handling of errors and prevent disruptions in the data stream. Measurement of this skill in the test helps gauge a candidate's knowledge and proficiency in implementing error handling techniques in RxJS, ensuring robustness and reliability in their code.
Backpressure: Backpressure is a flow control mechanism in RxJS that allows consumers to control the rate at which they receive data from a producer, preventing overwhelm or resource exhaustion. It ensures that data is consumed at a pace that can be handled effectively. Measurement of this skill in the test helps assess a candidate's understanding of backpressure concepts and their ability to implement appropriate strategies for managing data flow and preventing bottlenecks.
Testing with RxJS: Testing with RxJS involves writing tests for code that utilizes reactive programming and observables. It includes mocking observables, simulating events, and verifying expected behavior. Effective testing helps ensure the correctness and reliability of reactive code. Measurement of this skill in the test helps evaluate a candidate's proficiency in testing RxJS code and their ability to write comprehensive and reliable test cases for reactive applications.
JavaScript Coding: JavaScript coding refers to the ability to write clean, efficient, and maintainable JavaScript code. It involves applying best practices, utilizing language features effectively, and following coding standards. Measurement of this skill in the test helps assess a candidate's JavaScript coding skills and their ability to write high-quality code that is readable, performant, and scalable.
