Rust Closures and lambda expressions Simple lambda expressions
Example
// A simple adder function defined as a lambda expression.
// Unlike with regular functions, parameter types often may be omitted because the
// compiler can infer their types
let adder = |a, b| a + b;
// Lambdas can span across multiple lines, like normal functions.
let multiplier = |a: i32, b: i32| {
let c = b;
let b = a;
let a = c;
a * b
};
// Since lambdas are anonymous functions, they can be called like other functions
println!("{}", adder(3, 5));
println!("{}", multiplier(3, 5));
This displays:
8
15
