這個叫什么？Write Up嗎

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lab0

lab0要做的事，實現(xiàn)buffer部分的功能，要自己寫變量以及實現(xiàn)接口。

成員函數(shù) write()向buffer內(nèi)寫數(shù)據(jù)，peek_out() pop_out() read() 函數(shù)從buffer內(nèi)讀數(shù)據(jù)，

buffer長度capacity，需要變量記錄向buffer內(nèi)一共寫入和讀取過多長的數(shù)據(jù)。

有些變量在后面的lab會用上，第一次寫真不容易想，好些都是參照別人的博客寫的。

lab1

// Construct a `StreamReassembler` that will store up to `capacity` bytes.
StreamReassembler(const size_t capacity);
// Receive a substring and write any newly contiguous bytes into the stream,
// while staying within the memory limits of the `capacity`. Bytes that would
// exceed the capacity are silently discarded.
//
// `data`: the substring
// `index` indicates the index (place in sequence) of the first byte in `data`
// `eof`: the last byte of this substring will be the last byte in the entire stream
void push_substring(const string &data, const uint64_t index, const bool eof);
// Access the reassembled ByteStream (your code from Lab 0)
ByteStream &stream_out();
// The number of bytes in the substrings stored but not yet reassembled
size_t unassembled_bytes() const;
// Is the internal state empty (other than the output stream)?
bool empty() const;