October 2019
Intermediate to advanced
444 pages
10h 37m
English
Content preview from Rust Programming Cookbook
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How it works...
In this recipe, we explored the relationship between crates and modules. Rust supports several ways of encapsulating code into units, and the 2018 edition has made it a lot easier to do. Seasoned Rust programmers will miss the extern crate declaration(s) at the top of the files, which is nowadays only necessary in special cases. Instead, the crate's contents can be used right away in a use statement.
In this way, the line between modules and crates is now blurred. However, modules are much simpler to create since they are part of the project and only need to be declared in the root module to be compiled. This declaration is done using the mod statement, which also supports implementation in its body—something that is used ...
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