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The Ultimate Guide to Rust Programming

Method Call Chaining

Explore how method call chaining in Rust helps create clearer and more readable code by allowing functions to be called sequentially in a left-to-right order. Understand how converting function calls to method calls enhances code flow, making it easier to follow and maintain while working with mutable values and method syntax.

We'll cover the following...

Two lessons ago, we had an exercise to rewrite this main function to not use any let statements:

Rust 1.40.0
fn main() {
    let fruit = new_fruit();
    let fruit = increase_fruit(fruit);
    print_fruit(fruit);
}

The solution to this exercise is:

Rust 1.40.0
fn main() {
    print_fruit(increase_fruit(new_fruit()));
}

Lots of people consider this kind of code ...