October 2018
Beginner
180 pages
4h 48m
English
Content preview from Rust Quick Start Guide
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FnOnce
The FnOnce trait is automatically applied to any function that uses mutable borrows, immutable borrows, or moved variables to access data outside its own scope.
The is a loose requirement, which any function or closure will satisfy, so FnOnce is the most common of the function traits.
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