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Memory Lifecycle

Memory moves through different phases as objects (values) are created and destroyed.

Memory State	Readable from Safe Rust?
Available	No
Allocated	No
Initialized	Yes

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This section discusses what happens as memory from the operating system becomes a valid variable in the program.

When memory is available, the operating system has provided our program with it.

When memory is allocated, it is reserved for values to be written to it. We call this uninitialized memory.

When memory is initialized, it is safe to read from.

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