Ownership is Rust’s core memory safety system. Each value in Rust has a single owner, when ownership moves to another variable, the original one becomes invalid. This ensures memory safety without needing a garbage collector. If there is one concept you must understand to write real Rust programs, it is ownership. Unlike JavaScript, Rust does […]
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In Rust, functions are declared using the fn keyword. They take zero or more parameters, may return a value, and are used to organize reusable blocks of logic. Every Rust program starts with a special function named main. Functions help you organize your code and make it reusable. In Rust, defining a function is simple
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To read user input from the console in Rust, you use the std::io module, specifically the stdin() function. Input is read as a string, so you must usually trim it and convert it to another type like integer or float using methods like .trim() and .parse(). Reading input from the user is one of the
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Rust has three types of loops: loop (infinite), while (runs while a condition is true), and for (used to iterate over ranges or collections). You can control loops using break to exit early or continue to skip to the next iteration. Most programs need to repeat actions. In Rust, you have three ways to do
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Rust uses if, else if, and else for branching logic, just like JavaScript. It also provides a powerful match expression for pattern matching. Both are used to control the flow of your program based on conditions or value patterns. In most programs, you need to make decisions: check if a number is positive, compare values,
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In Rust, an array is a fixed-size collection of values of the same type. A slice is a view into a portion of an array. Arrays are useful when you know the number of elements at compile time, and slices let you work with a section of an array without copying data. When you need
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In Rust, a tuple is a fixed-size group of values that can be of different types. You define a tuple using parentheses, like let person = (“Alice”, 30). Tuples are useful when you want to return or store multiple values together without creating a full struct. Tuples are one of the simplest ways to group
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Rust supports standard operators for arithmetic (+, –, *, /), comparison (==, !=, <, >), and logic (&&, ||, !). These operators work on numbers, booleans, and some custom types, making them essential for performing calculations and decisions in your code. In this post, I will explain how to use operators in Rust. If you
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Rust has two main string types: &str (a string slice) and String (a growable, heap-allocated string). &str is usually used for static or borrowed strings, while String is used when you need to modify or own the string data. In JavaScript, you often work with strings directly, and most of the time you do not
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Rust has four main categories of scalar primitive types: integers, floating-point numbers, booleans, and characters. These types are built into the language, fixed in size, and form the foundation of all value handling in Rust programs. To write useful programs in Rust, you need to work with basic values like numbers, text, and true-or-false conditions.
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