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Why does string::compare return an int?
...ntegral
promotion, so there's no point in returning anything smaller.
In C++ (as in C), every expression is either an rvalue or an
lvalue. Historically, the terms refer to the fact that lvalues
appear on the left of an assignment, where as rvalues can only
appear on the right. Today, a simple ap...
Why is the asterisk before the variable name, rather than after the type?
...
float an_element = my_array[2];
and: int copy_of_value = *myVariable;.
C++ throws a spanner in the works with references, because the syntax at the point where you use references is identical to that of value types, so you could argue that C++ takes a different approach to C. On the other hand, ...
error: use of deleted function
I've been working on some C++ code that a friend has written and I get the following error that I have never seen before when compiling with gcc4.6:
...
Is it possible to print a variable's type in standard C++?
...
C++11 update to a very old question: Print variable type in C++.
The accepted (and good) answer is to use typeid(a).name(), where a is a variable name.
Now in C++11 we have decltype(x), which can turn an expression into a t...
What is the purpose of using -pedantic in GCC/G++ compiler?
...your program if this is at all possible. However, in some
cases, the C and C++ standards specify that certain extensions are forbidden. Conforming compilers
such as gcc or g++ must issue a diagnostic when these extensions are encountered. For example,
the gcc compiler’s -pedantic option causes gcc...
How to change the default GCC compiler in Ubuntu?
... /usr/bin/cc cc /usr/bin/gcc-4.8 \
--slave /usr/bin/c++ c++ /usr/bin/g++-4.8 \
--slave /usr/bin/g++ g++ /usr/bin/g++-4.8 \
--slave /usr/bin/gcov gcov /usr/bin/gcov-4.8 \
--slave /usr/bin/gcov-dump gcov-dump /usr...
Why should I care that Java doesn't have reified generics?
...ld be abstracted into an interface, which could be somewhat implemented in C++ using template specialization.)
– JAB
Jan 8 '14 at 19:00
...
When do we have to use copy constructors?
I know that C++ compiler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples?
...
Writing your own STL Container
...
You will need to read the C++ Standard section about Containers and requirements the C++ Standard imposes for container implementations.
The relevant chapter in C++03 standard is:
Section 23.1 Container Requirements
The relevant chapter in C++11 ...
CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
...示：
图11
4 实例以外的思考
本实例仅作为入门学习使用。在本实例的基础上，读者可以进一步思考以下两个问题：
1) 如何实现单元格的合并、拆分操作。
2) 如何从CGridCell继承，自定义一个类似CGridCellCheck...