In Rust programming language, memory efficiency, and safety is a feature. The mem::swap function, allows you to swap values between variables efficiently. Understanding mem::swap: In Rust, the std::mem module offers a collection of functions that deal with memory-related operations. Among them, the swap function stands out as a convenient way to exchange the values of two variables. The function is designed to work with mutable references to variables, allowing for…
mem::take Vs mem::replace
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mem::take and mem::replace are both used to manipulate ownership and values, but they work slightly differently. mem::take The mem::take method takes ownership of a value and replaces it with a default value of the same type. The original value is returned. Her is a simple example: In the above example, mem::take is used to take ownership of v and replace it with an empty vector and then returning the new…
Mem::replace in Rust
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mem::replace is a Rust standard library function that swaps a value in a variable with a new value while returning the original value. In Rust, when you move data out of a container like Vec or Option, the container can no longer be directly used, as its contents have been moved and it is considered empty or invalidated. Imagine a scenario where you want to take the data out of…
Box Smart Pointer in Rust
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A pointer in programming is often a piece of data that directs to the location of another piece of data in memory. For example, your home address points to where you live. Smart pointers are data structures that act like pointers but also have additional metadata and capabilities to manage memory automatically and safely. Box smart pointers are one of the many smart pointers in Rust, it allows you to…
Understanding Dereferencing in Rust
Dereferencing is how we access the value that a reference points to. References are like signposts that guide us to the actual data. Imagine them as arrows pointing to a treasure! 💎 Technically, a pointer stores the address of another variable in memory. So, if we do something like the example below: my_ref will hold the address of x in memory. In that case, x is not equal to my_ref, make…
Raw String in Rust
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Raw strings are handy when you’re working with content that has characters that would normally require escaping in a regular string. For instance, if you’re dealing with HTML, raw strings can save you from the headache of messing up the original HTML structure. Raw strings starts with r# and closes with a # like so: r#””#. Here is an example of a Javascript code being passed as a string using…
Choosing Between str and String in Rust
In this guide, we’ll explore the reasons for having two types of strings in Rust &str and String , how they work, how they are stored in memory, and when to use each of them. Grab your pop corn and let’s ride along! Why do we have two types of string in Rust? It’s normal for new Rust developers to ask this question: “Why do we have two types of…
Rust Lifetimes Simplified
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This guide is an attempt to simplify Rust Lifetimes, it’s a series and will be divided into several chapters. We’ll start with chapter one today. Chapter 1 Lifetimes and its benefits In Rust programming, lifetimes is a critical yet misunderstood concept. Assuming we are not talking about programming, when we talk about lifetimes what comes to mind? According to Oxford Dictionary, a lifetime is the duration of a person’s life…
Understanding Rust’s memory magic with an analogy
Imagine a town, where Mrs. Ifeoluwa owns a beautiful home that she’s decided to sell. In this town, there is a strict regulatory body (comparable to Rust’s Borrow Checker) that maintains order and ensures the rules are followed. Mrs. Ifeoluwa, as the sole owner of her house, has exclusive rights to it (the principle of Ownership). She goes to the regulatory body and notifies them about her intention to sell…
Use Rust in a Node.js project
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Rust is the most loved language right now — sounds like a cliche already 😃, but it’s true. In fact, it has been added to the Linux Kernel and going to be added to the Windows Kernel. Not every language enjoys that kind of privilege and love, you know. One of the benefits of Rust is that it’s fast, if you have implemented something awesome in Rust and you want…