Rust closures are a very helpful and efficient feature of Rust. Closures are quite useful as it allows environment capturing. Let’s explore it together and learn more about it.

Introduction

Rust closures are anonymous functions without any name that you can save in a variable or pass as arguments to other functions. Unlike functions, closures can capture values from the scope in which they’re defined.

Example –

let closure_example = |num| -> i32 { num + 1 };

It is a simple example of closure. All the thing on the right side of equals is a closure and it is stored in a variable named closure_example. Now let us understand the syntax of closure.

#rust