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Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...掉”自己的APP——向第三方应用开发者开放API(应用程序编程接口，以使应用程序可以在源程序一级上在多种操作系统上移植运行)。换句话说，这使得Uber客户在不使用Uber应用的情况下，也可以叫车。
据Uber官网发布的消息，这...
Do the parentheses after the type name make a difference with new?
...ns POD members and is using a compiler-generated default constructor.
In C++1998 there are 2 types of initialization: zero and default
In C++2003 a 3rd type of initialization, value initialization was added.
Assume:
struct A { int m; }; // POD
struct B { ~B(); int m; }; // non-POD, compiler gen...
Is it safe to use -1 to set all bits to true?
I've seen this pattern used a lot in C & C++.
20 Answers
20
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CFLAGS vs CPPFLAGS
I understand that CFLAGS (or CXXFLAGS for C++) are for the compiler, whereas CPPFLAGS is used by the preprocessor.
4 Answer...
How do I explicitly instantiate a template function?
...You can tell the compiler to explicitly instantiate templates. Google for "C++ explicit template instantiation" for more details.
– hrnt
Feb 8 '11 at 12:56
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How does libuv compare to Boost/ASIO?
...
Scope
Boost.Asio is a C++ library that started with a focus on networking, but its asynchronous I/O capabilities have been extended to other resources. Additionally, with Boost.Asio being part of the Boost libraries, its scope is slightly narrowe...
Red black tree over avl tree
...ree is used in the following:
Java: java.util.TreeMap, java.util.TreeSet
C++ STL (in most implementations): map, multimap, multiset
Linux kernel: completely fair scheduler, linux/rbtree.h
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Size of Matrix OpenCV
...of rows in a 2D array.
mat.cols – Number of columns in a 2D array.
Or:
C++: Size Mat::size() const
The method returns a matrix size: Size(cols, rows) . When the matrix is more than 2-dimensional, the returned size is (-1, -1).
For multidimensional matrix, you need to use
int thisSizes[3] = {...
unsigned int vs. size_t
I notice that modern C and C++ code seems to use size_t instead of int / unsigned int pretty much everywhere - from parameters for C string functions to the STL. I am curious as to the reason for this and the benefits it brings.
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How can I get the list of files in a directory using C or C++?
How can I determine the list of files in a directory from inside my C or C++ code?
26 Answers
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