For the use case presented in the proposal, this means we can retrieve an arena allocator from the surrounding context and use it to allocate memory for a deserialized value. The proposal introduces a new with keyword, which can be used to retrieve any value from the environment, such as a basic_arena.
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。新收录的资料是该领域的重要参考
一、搭建舞台——“三剑客”的诞生
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