understanding immutability in javascript скачать в хорошем качестве

understanding immutability in javascript

Download 1M+ code from https://codegive.com/44a2082 understanding immutability in javascript immutability is a fundamental concept in programming that refers to the inability to change an object after it has been created. in javascript, primitive data types (such as strings, numbers, and booleans) are immutable, while complex data types (such as objects and arrays) are mutable. immutability brings a number of benefits, such as easier reasoning about code, avoiding side effects, and making it easier to implement features like undo functionality or time travel debugging. let's explore immutability in javascript with some code examples. 1. primitives vs. objects primitives primitive types in javascript include: `string` `number` `boolean` `null` `undefined` `symbol` `bigint` when you manipulate a primitive, you are essentially creating a new value rather than changing the existing one. *example:* objects objects in javascript are mutable. when you change an object's property, you are modifying the existing object rather than creating a new one. *example:* 2. creating immutable structures to achieve immutability with objects and arrays, you can use various methods. here are some common approaches: using object.freeze() `object.freeze()` prevents modifications to an object. however, it does not make nested objects immutable. *example:* using spread operator you can create a new object based on an existing one using the spread operator. this approach allows you to create a modified copy without changing the original object. *example:* using array methods for arrays, you can use methods that return new arrays, such as `map()`, `filter()`, and `concat()`. *example:* 3. libraries for immutability for more complex applications, you might want to use libraries that help manage immutability, such as: **immutable.js**: provides persistent immutable data structures. **immer**: allows you to work with mutable syntax while keeping the data immutable under the hoo ... #JavaScript #Immutability #windows immutability javascript javascript data structures functional programming javascript immutable objects state management javascript object freezing pure functions javascript shallow vs deep copy immutability patterns redux state performance optimization javascript javascript libraries immutability data integrity javascript immutability benefits javascript best practices