Rust Programming Tutorial #21 - Impl Keyword (Implementation)

In this video we take a look at the 'impl' keyword in Rust.

We see how we can add methods to a struct to make it really simple and easy to use.

If this video helped you out and you'd like to see more, make sure to leave a like and subscribe to dcode!

[joe]

These videos are killer. I’m about to graduate with a bachelors in computer science and a minor in mathematics. I’ve written code in many languages. I’ve spent maybe 8 months studying Rust on and off and these videos by far have explained more to me than any others. Thank you! Keep it up!

[maganaluis]

Thank you so much for making these videos! I really want to see Rust being used more and you’re making a great contribution to the community.

[exoticcoder]

Thank you, It's so much clearer to me now

[QmVuamFtaW]

this is by far the best explanation on impl keyword on the whole platform. thanks you so much for your hard work.

[Shakespeare]

So . . . Is there no bespoke "return" keyword in RUST? The function just returns as soon as a single line results in a calculation? What if there were another calculation right after?

[tony]

You never use strings in your structs and for some reason, when I try to use them I get an error? I can't use str and there also doesn't seem to be str8, str32, etc.

[nahiyanalamgir]

It's called "implementation"; I suggest you call the actual words instead of the shortcuts so others can learn from you. Nice and straightforward tutorial, thank you!

[stefanosmandalas]

How comes there is no "return" keyword in function "is_square"?

[vornamenachname]

may i ask WHY line 12 returns that value ? what if i write that line twice, or what if i want to return False anyway ?

[chenjus]

There's no return keyword for struct methods?

[fabionr]

Rust: when python and c++ have a child

[dhirajkatekar]

may be you could have added method with params like
impl Rectangle {
fn print_desc(&self) {
println!("Rectangle {} x {}", self.w, self.h);

}
fn calculate_area_of_rect(&self) {
println!("Area of Rectangle {} ", (self.w * self.h));
}


fn calculate_with_params(&self, w: i32, h: i32) {

println!("Area of Rectangle {} ", (w * h));
}
}
just to pass extra parameter if needed

[ItzShinePlayz]

it's like class method on python xD
I tot u meant it as dictionary