boost-circularbuffer | 易学教程

How to get element from circular_buffer

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问题 I am using boost library in MAC ( xcode ). I have two questions about boost::circular_buffer . 1 - I am getting syntax error when declaring the circular_buffer boost::circular_buffer<int> cb(10); Expected parameter decelerator Expected ')' 2 - Second question is when I add element into boost::circular_buffer using push_back, how to extract / get the element from circular_buffer, pop_front does not give the element. 回答1: boost::circular_buffer<T>::front() gives you a reference to the element

Using a circular buffer on disk

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问题 I was trying to create a memory-mapped circular buffer on disk using Boost, and I read this answer: https://stackoverflow.com/a/29265629/8474732 However, I have a hard time reading the circular buffer that was written. I tried to do a push_back on the "instance" variable, now the instance has size 1. Great. But how would I read the contents back? Or push_back additional elements at a later time? Creating another instance from the same allocator and mmf shows that the instance has size 0. I

How to get element from circular_buffer

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I am using boost library in MAC ( xcode ). I have two questions about boost::circular_buffer . 1 - I am getting syntax error when declaring the circular_buffer boost::circular_buffer<int> cb(10); Expected parameter decelerator Expected ')' 2 - Second question is when I add element into boost::circular_buffer using push_back, how to extract / get the element from circular_buffer, pop_front does not give the element. boost::circular_buffer<T>::front() gives you a reference to the element at the "front", while boost::circular_buffer<T>::pop_front() will remove that element. boost::circular_buffer