Immutability in functional programming
Immutability is a fundamental concept you should be familiar with when learning functional programming.
JavaScript Immutability
Immutability is a key concept in functional programming and JavaScript. This collection of articles will help you understand immutability, its benefits, and how to implement it in your code.
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JavaScript · How can I clone an array in JavaScript?
Pick up a few new tricks which you can use to clone arrays in JavaScript.
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JavaScript · How can I clone an object in JavaScript?
Learn how JavaScript handles mutable data, such as objects and arrays, and understand how shallow cloning and deep cloning work.
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JavaScript · 3 ways to use the JavaScript spread operator with arrays
JavaScript’s spread operator is a very versatile tool. Here are some simple ways to use it.
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JavaScript · How can I deep freeze an object in JavaScript?
Learn how mutability works in JavaScript, its applications to objects and how you can properly freeze them to make them constant.
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JavaScript · Immutable JavaScript objects using the Proxy object
Freezing objects is not the only way to prevent mutations. Learn how you can leverage the Proxy object to your advantage.
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JavaScript · Are JavaScript strings immutable?
When it comes to immutability, JavaScript strings are often a source of confusion. Yet they're not as complicated as you might expect.
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JavaScript · Is JavaScript pass-by-value or pass-by-reference?
How JavaScript handles passing data is a source of confusion and bugs for many developers, especially when it comes to object types.