Anonymous Pool

template<typename T, int N>
class AnonymousPool {
private:
    uint32_t mCount;
    T mRecords[N];
  
public:
	AnonymousPool() : mCount(0) {
	}
	
	int count() const { return mCount; }
	T* begin() { return mRecords; }
	T* end() { return mRecords+mCount; }
	
	T* takeOut() {
		ASSERT(mCount < N);
		mCount++;
		return mRecords + (mCount-1);
		
	}
	
	void putBack(T* t) {
		int n = t - mRecords;
		ASSERT(n < mCount);
		mCount--;
		mRecords[n] = mRecords[mCount];
	}
	
	void drain() {
		mCount = 0;
	}
};