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C++ 智能指针shared_ptr,weak_ptr,shared_from_this实践 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ 智能指针shared_ptr,weak_ptr,shared_from_this实践new XXX(shared_from_this()) 如果用强指针去接，则增加引用计数；弱引用去接，不增加引用计数。auto去接等同强指针。weak_ptr 传给thread、timer回调，不能使用expired()判断
new XXX(shared_from_thi...
windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
windows C++ gbk转为utf-8在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windows和linux使用的编码不同,所以需要将windows下的中文编码转换为 在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windo...
Eclipse C++启用pretty printing，更直观显示stl变量内容 - C/C++ - 清泛网...
Eclipse C++启用pretty printing，更直观显示stl变量内容enable-pretty-printing-in-eclipse-cdt使用Eclipse CDT调试stl变量时，我们关注的变量内容往往需要查看好几层的变量后才能看到，非常的不直观。这里提供一种更优雅地打印stl变量的方法，...
Win7禁用休眠 减少C盘容量占用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Win7禁用休眠 减少C盘容量占用开始菜单 → 运行 → cmd.exe → 右键以管理员身份运行 → 命令：powercfg -h off回车即可，C盘容量占用减少立...开始菜单 → 运行 → cmd.exe → 右键“以管理员身份运行” → 命令：power...
Linux C++ 单元测试与gcov代码覆盖率统计 - C/C++ - 清泛网 - 专注C/C++及内核技术
Linux C++ 单元测试与gcov代码覆盖率统计gtest-and-coverage本文主要介绍Linux下C++单元测试下的代码覆盖率统计的方法，测试框架采用gtest，当然也可以使用其他的，这里不做过多的说明，主要介绍代码的覆盖率统计方法。一、什么是gco...
Which timestamp type should I choose in a PostgreSQL database?
I would like to define a best practice for storing timestamps in my Postgres database in the context of a multi-timezone project.
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What is the __del__ method, How to call it?
I am reading a code. There is a class in which __del__ method is defined. I figured out that this method is used to destroy an instance of the class. However, I cannot find a place where this method is used. The main reason for that is that I do not know how this method is used, probably not like ...
Further understanding setRetainInstance(true)
What exactly happens when you call setRetainInstance(true) on a Fragment ? The documentation is virtually non-existent and this seems like a very important function. Specifically I want to know how much of this sequence (that I made up) is true:
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How to drop SQL default constraint without knowing its name?
In Microsoft SQL Server, I know the query to check if a default constraint exists for a column and drop a default constraint is:
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What's the difference between a Python “property” and “attribute”?
I am generally confused about the difference between a "property" and an "attribute", and can't find a great resource to concisely detail the differences.
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