Please post your solutions to the Oct 6 In-Class Exercise to this thread.

Best,

Chris

Unmodified Program: <nowiki> fn main() { let s1 = String::from("hi there"); let s2 = s1.clone(); println!("s1 = {}, s2 = {}", s1, s2); } </nowiki>

Output: <nowiki> s1 = hi there, s2 = hi there </nowiki>

Modified Program: <nowiki> fn main() { let s1 = String::from("hi there"); let s2 = s1; println!("s1 = {}, s2 = {}", s1, s2); } </nowiki>

Output: <nowiki> error[E0382]: borrow of moved value: s1 --> main.rs:4:31 | 2 | let s1 = String::from("hi there"); | -- move occurs because s1 has type std::string::String, which does not implement the Copy trait 3 | let s2 = s1; // if had let s2 = s1; instead, next line w... | -- value moved here 4 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

error: aborting due to previous error

For more information about this error, try rustc --explain E0382. exit status 1 </nowiki>

fn main(){ let s1 = String::from("hi there"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); } fn main(){ let s1 = String::from("hi there"); let s2 = s1; // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); }

fn main() { let s1 = String::from("hi there"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); }

output: s1 = hi there, s2 = hi there

fn main() { let s1 = String::from("hi there"); let s2 = s1; // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); }

output: error[E0382]: borrow of moved value: s1 --> src/main.rs:4:30 | 2 | let s1 = String::from("hi there"); | -- move occurs because s1 has type String, which does not implement the Copy trait 3 | let s2 = s1; // if had let s2 = s1; instead, next line would not work | -- value moved here 4 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

For more information about this error, try rustc --explain E0382. error: could not compile playground due to previous error

''' Last example's output:''' s1 = hi there, s2 = hi there

''' Switch s2=s1.clone() and s2=s1 output:''' Compiling playground v0.0.1 (/playground) error[E0382]: borrow of moved value: s1 --> src/main.rs:5:34 | 3 | let s1 = String::from("hi there"); | -- move occurs because s1 has type String, which does not implement the Copy trait 4 | let s2=s1; // if had let s2 = s1; instead, next line would not work | -- value moved here 5 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

For more information about this error, try rustc --explain E0382. error: could not compile playground due to previous error

<nowiki> Original: fn main(){ let s1 = String::from("hi there"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); }

Output: s1 = hi there, s2 = hi there

Modified:

fn main(){ let s1 = String::from("hi there"); s2 = s1; println!("s1 = {}, s2 = {}", s1, s2); }

Output: error[E0425]: cannot find value s2 in this scope --> test.rs:3:5 | 3 | s2 = s1; | ^^ help: a local variable with a similar name exists: s1

error[E0425]: cannot find value s2 in this scope --> test.rs:4:38 | 4 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ help: a local variable with a similar name exists: s1

error: aborting due to 2 previous errors

</nowiki>

fn main() { let s1 = String::from("hi there"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); }

Output: s1 = hi there, s2 = hi there

Modified:

fn main() { let s1 = String::from("hi there"); let s2 = s1; println!("s1 = {}, s2 = {}", s1, s2); }

Output: error[E0382]: borrow of moved value: s1 --> src/main.rs:4:34 | 2 | let s1 = String::from("hi there"); | -- move occurs because s1 has type String, which does not implement the Copy trait 3 | let s2 = s1; // if had let s2 = s1; instead, next line would not work | -- value moved here 4 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

For more information about this error, try rustc --explain E0382.

thanhle@Thanhs-MacBook-Pro hw2_thanh % rustc main.rs thanhle@Thanhs-MacBook-Pro hw2_thanh % ./main s1 = hi there s2 = hi there

thanhle@Thanhs-MacBook-Pro hw2_thanh % rustc main2.rs error[E0382]: borrow of moved value: s1 --> main2.rs:5:31 | 2 | let s1 = String::from("Hello"); | -- move occurs because s1 has type String, which does not implement the Copy trait 3 | let s2 = s1; | -- value moved here 4 | 5 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

error: aborting due to previous error

For more information about this error, try rustc --explain E0382. thanhle@Thanhs-MacBook-Pro hw2_thanh %

fn main() { let s1 = String::from("hi there\n"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work

println!("s1 = {} s2 = {}", s1, s2);

} fn main() { let s1 = String::from("Hello"); let s2 = s1;

println!("s1 = {}, s2 = {}", s1, s2);

}

fn main() { let x = 20; let y = x;

let s1 = String::from("hi there");
// let s2= s1;

let s2 = s1.clone();
println!("s1 = {}, s2={}",s1,s2);

}

Output: s1 = hi there, s2=hi there

fn main() { let x = 20; let y = x;

let s1 = String::from("hi there");
let s2= s1;

// let s2 = s1.clone();
println!("s1 = {}, s2={}",s1,s2);

}

Output: error[E0382]: borrow of moved value: s1

<pre> Code: fn main(){ let s1 = String::from("hi there"); let s2 = s1.clone(); // if had let s2 = s1; instead, next line would not work println!("s1 = {}, s2 = {}", s1, s2); } Output:s1 = hi there, s2 = hi there

Modified code error[E0382]: borrow of moved value: s1 --> inclass.rs:4:31 | 2 | let s1 = String::from("hi there"); | -- move occurs because s1 has type String, which does not implem ent the Copy trait 3 | let s2 = s1; // if had let s2 = s1; instead, next line would not work | -- value moved here 4 | println!("s1 = {}, s2 = {}", s1, s2); | ^^ value borrowed here after move

error: aborting due to previous error

For more information about this error, try rustc --explain E0382. </pre>