## matrix_transposition
### Instructions
- Define a `struct` named `Matrix` as a tuple of 2 tuples. The nested tuple will contain 2 `i32` s.
- Create a **function** named `transpose` that calculates the transposition of a 2x2 matrix.
```rust
pub fn transpose(m: Matrix) -> Matrix {
}
```
The transposition of a matrix, switches the columns to rows, and the rows to columns. For example:
```
( a b ) __ transposition __ > ( a c )
( c d ) ( b d )
```
`Matrix` must implement `Debug` , `PartialEq` and `Eq` . You can use `derive` .
> Remember that you are defining a library, so you must make the elements that can be called from an external crate public.
### Usage
Here is a possible program to test your function
```rust
use matrix_transposition::transpose;
use matrix_transposition::Matrix;
fn main() {
let matrix = Matrix((1, 3), (4, 5));
println!("Original matrix {:?}", matrix);
println!("Transpose matrix {:?}", transpose(matrix));
}
```
And its output:
```console
$ cargo run
Original matrix Matrix((1, 3), (4, 5))
Transpose matrix Matrix((1, 4), (3, 5))
$
```
### Notions
- [Defining a struct ](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html )
- [The Tuple Type ](https://doc.rust-lang.org/stable/book/ch03-02-data-types.html?highlight=accessing%20a%20tuple#compound-types )
- [Tuples ](https://doc.rust-lang.org/rust-by-example/primitives/tuples.html )
- [Tuple Structs without Named Fields ](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html?highlight=tuple#using-tuple-structs-without-named-fields-to-create-different-types )
- [Adding Useful Functionality with Derived Traits ](https://doc.rust-lang.org/stable/book/ch05-02-example-structs.html?highlight=debug%20deriv#adding-useful-functionality-with-derived-traits )
- [Chapter 7 ](https://doc.rust-lang.org/stable/book/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.html )
