My question is simple. When do we need to have a default constructor? Please refer to the code below:
I am trying to write a quadtree sparse matrix class. In short, a quadtree_matrix<T> is either the zero matrix or a quadruple (ne, nw, se, sw) of quadtree_matrix<T>.
Is the C++ Standard Library part of the C++ Language? (note \"language\", not \"standard\"; both are, of course, part of the standard).
I\'m working on writing an implementation of the JVM in JavaScript, which means writing a lot of native code for the standard libraries in JavaScript.However, there are a huge number of classes in the
Does the C++ standard implicitly or explicitly allow such language extensions (o开发者_运维问答r use whatever other term you like) as MOC is?
I am not so well-versed in the C standard, so please bear with me. I would like to know if it is guaranteed, by the standard, that memcpy(0,0,0) is safe.
Can the C++ compiler assume a \'const bool &\' value will not change? For example, imagine that I have a class:
Possible Duplicate: Could anyone explain these undefined behaviors (i = i++ + ++i , i = i++, etc…)
C99 [Section 6.3.2.1/1] sa开发者_运维技巧ys An lvalue is an expression with an object type or an incomplete type other than void;
mbrtowc is specified to handle a NULL pointer for the s (multibyte character pointer) argument as follows:
加载中,请稍侯......