Rust lets us easily interact with values in memory. That is, we can create values from the fundamental types (the integers, the floats, bool, etc), and we can design our own types that combine those things together (structs, enums, etc). But none of this will actually get our machine to do anything - creating a variable like let led_on = true; does not, sadly, make an LED turn on. To get our machine to do something beyond storing/loading values to/from RAM, we need to head into unsafe Rust. This will let us perform operations that act on data that lies outside of the Rust compiler's model of our program, commanding the hardware (or an operating system kernel) to act. Unfortunately hardware can appear to the processor in different ways, and the right kind of unsafe operation will depend entirely upon the hardware you are trying to interact with. We'll look at three common examples next.
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2026年03月22日 19:52:02。业内人士推荐搜狗输入法下载作为进阶阅读
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