Rust Programming 2023 - A Comprehensive Course for Beginners - What Are Closures in Rust

What is a key characteristic of closures that differentiates them from regular functions?

• They can be named.

• They cannot capture values from their defining scope.

• They are always global.

• They can capture values from their defining scope.

Which of the following is a correct way to define a closure in terms of syntax?

• Using curly braces for parameters.

• Using parentheses for parameters.

• Using two vertical lines for parameters.

• Using square brackets for parameters.

In the example provided, what is the purpose of the closure?

• To check if a number is even.

• To check if a number is odd.

• To subtract two numbers.

• To add two numbers.

How does the closure determine if a number is even in the example?

• By checking if the number is less than 10.

• By using the modulus operator to check if the remainder is 1 when divided by 2.

• By using the modulus operator to check if the remainder is 0 when divided by 2.

• By checking if the number is greater than 10.

What is one benefit of using closures in programming?

• They increase the complexity of code.

• They limit the scope of variables.

• They allow for code reusability and customization.

• They make code less readable.