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## adding
### Instructions
Create the function `add_curry` that returns a closure.
The purpose is to curry the add method to create more variations.
### Usage
Here is a program to test your function.
```rust
use adding::add_curry;
fn main() {
let add10 = add_curry(-10);
let add20 = add_curry(2066);
let add30 = add_curry(300000);
println!("{}", add10(5));
println!("{}", add20(195));
println!("{}", add30(5696));
}
```
And its output:
```console
student@ubuntu:~/adding/test$ cargo run
-5
2261
305696
student@ubuntu:~/adding/test$
```