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After reading this
I'm wondering why is there "mod" keyword and mod.rs? The folder hierarchy can describe the module as well?
387
pub(super) makes an item visible to the parent module. This is equivalent to pub(in super) . pub(self) makes an item visible to the current module. This is equivalent to pub(in self) or not using pub at all.
To import the module, we use the keyword mod , followed by the file name without the . rs extension. When a module is imported, it allows us to use any code that's marked as public in the file we're importing the module from. Note that the module must be imported before we use any of its code.
Rust projects are organized into crates which form a single distribution unit, like a static object or a DLL. Source within a crate is organized into modules, which are like namespaces but provide an additional privacy boundary. Not everything in a module has to be publicly exported to other modules.
While it can, it can also be overridden:
#[path = "somewhere/else"]
mod lol;
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