October 2019
Intermediate to advanced
444 pages
10h 37m
English
Content preview from Rust Programming Cookbook
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How it works...
Threads in Rust behave a lot like regular functions: they can take ownership and operate on the same syntax as closures (|| {} is an empty/noop function without parameters). Therefore, we have to treat them like we treat functions and think of them in terms of ownership and borrowing, or more specifically: lifetimes. Passing a reference (the default behavior) into this thread function makes it impossible for the compiler to keep track of the validity of the reference, which is a problem for code safety. Rust solves this by introducing the move keyword.
Using the move keyword changes the default behavior of borrowing to moving the ownership of every variable into the scope. Hence, unless these values implement the Copy trait ...
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