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How can I loop through a C++ map of maps?
How can I loop through a std::map in C++? My map is defined as:
9 Answers
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++使用OLE/COM高速读写EXCEL的源码VC对Excel表格的操作的方法有多种，如：通过ODBC数据库实现，通过解析Excel表格文件，通过OLE COM的实现。本文主要研究通过OLE COM实现对Excel表格的操作。另外，本文主代码中汇聚各网友的智慧进行...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
I have seen a lot of people in the C++ community(particularly ##c++ on freenode) resent the use of wstrings and wchar_t , and their use in the windows api. What is exactly "wrong" with wchar_t and wstring , and if I want to support internationalization, what are some alternatives to wide chara...
Is the practice of returning a C++ reference variable evil?
... pointers to dynamic memory bad. They both have their legitimate places in C++. Smart pointers should definitely be your default go-to when it comes to dynamic memory management though, but your default smart pointer should be unique_ptr, not shared_ptr.
– Jamin Grey
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Can a local variable's memory be accessed outside its scope?
...edictable, safe world because you chose to break the rules of the system.
C++ is not a safe language. It will cheerfully allow you to break the rules of the system. If you try to do something illegal and foolish like going back into a room you're not authorized to be in and rummaging through a desk...
Is delete this allowed?
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The C++ FAQ Lite has a entry specifically for this
https://isocpp.org/wiki/faq/freestore-mgmt#delete-this
I think this quote sums it up nicely
As long as you're careful, it's OK for an object to commit suicide (delete th...
delete vs delete[] operators in C++
What is the difference between delete and delete[] operators in C++?
7 Answers
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Detecting endianness programmatically in a C++ program
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are you sure this is well defined? In C++ only one member of the union can be active at one time - i.e you can not assign using one member-name and read using another (although there is an exception for layout compatible structs)
– Faisal Va...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C++内核技术
MongoDB与内存MongoDB-And-Memory但凡初次接触MongoDB的人，无不惊讶于它对内存的贪得无厌，至于个中缘由，我先讲讲Linux是如何管理内存的，再说说MongoDB是如何使用内存的...但凡初次接触MongoDB的人，无不惊讶于它对内存的贪得无厌，...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C++内核技术
MongoDB与内存MongoDB-And-Memory但凡初次接触MongoDB的人，无不惊讶于它对内存的贪得无厌，至于个中缘由，我先讲讲Linux是如何管理内存的，再说说MongoDB是如何使用内存的...但凡初次接触MongoDB的人，无不惊讶于它对内存的贪得无厌，...