how to read a complete Row ?

[ffred]

Hi, still learning Rust, so maybe not really a Grid question but how can I read an entire Row and not cell by cell ? so not grid[x][y], but a way to have grid.get_row(x) thanks

[Edit:] did what I needed differently by using pop_row().

[becheran]

Hey, I am not sure what exactly you are trying to achieve, but if you want to access a specific row, why don't you just use the grid[x] function? This will return a row as a slice.

[ffred]

as I said, I did what I needed completely differently, so I got it working. but I tried yesterday with grid[x] and since I got an error, I thought it wasn't the right way...

for example, this :

let mut result: Grid<u8> = Grid::new(36,6);
...
println!("{:?}", result[4]); 

give me this error :

Compiling tst6 v0.1.0 (K:\dev\rust\tst6)
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src\main.rs:45:22
    |
45  |     println!("{:?}", result[4]); 
    |                      ^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `ArgumentV1::<'a>::new_debug`
   --> D:\Users\ffred\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\fmt\mod.rs:351:5
    |
351 |     arg_new!(new_debug, Debug);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `ArgumentV1::<'a>::new_debug`
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `arg_new` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `tst6` due to previous error

 *  The terminal process "D:\Users\ffred\.cargo\bin\cargo.exe 'run', '--package', 'tst6', '--bin', 'tst6'" terminated with exit code: 101. 
 *  Terminal will be reused by tasks, press any key to close it. 

[becheran]

@ffred you could use the to_vec method to create a vector out of the slice. I guess that would solve your problem. Such as grid[0].to_vec(). Does this answer your question? For more info on slices have a look here: https://doc.rust-lang.org/book/ch04-03-slices.html

[ffred]

@becheran you're right, it's good. 👍 still have a lot to learn... thank you !!