Running other file instead of main.rs in same dict

help
1

I have been learning rust, so was running the command of cargo run but it was only running the main.rs not second.rs. So my question is that; is there any way for me to second.rs instead of main.rs

2

You normally shouldn't. main.rs (or lib.rs) is the entry file and everything gets called from there.
But.. you can do it with with cargo or rustc directly:
rustc second.rs
with cargo (make sure it's in src/bin)
cargo run --bin second

Edit: This may help too

Also, it might be useful for you to know how to run an example file.

In the same folder as src, make a folder called examples and add .rs files there. Then you can run them with
cargo run --example second.rs

If the example files use the code in your crate, you will need to add a lib.rs file.

1 Like
3

I have mostly no main.rs files. Even using lib.rs isn't a requirement for crates. Rust is a very relaxed in using arbitrary names. There is only a requirements for modules, to have matching file name or a directory.