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15 lines
892 B
15 lines
892 B
% The Perils Of RAII
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Ownership Based Resource Management (AKA RAII: Resource Acquisition Is Initialization) is
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something you'll interact with a lot in Rust. Especially if you use the standard library.
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Roughly speaking the pattern is as follows: to acquire a resource, you create an object that
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manages it. To release the resource, you simply destroy the object, and it cleans up the
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resource for you. The most common "resource"
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this pattern manages is simply *memory*. `Box`, `Rc`, and basically everything in
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`std::collections` is a convenience to enable correctly managing memory. This is particularly
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important in Rust because we have no pervasive GC to rely on for memory management. Which is the
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point, really: Rust is about control. However we are not limited to just memory.
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Pretty much every other system resource like a thread, file, or socket is exposed through
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this kind of API.
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