大约有 45,000 项符合查询结果（耗时：0.0331秒） [XML]
What do commas and spaces in multiple classes mean in CSS?
...{ ... }
A comma, as others have stated, is a way to apply rules to many different nodes at one time. In this case, the rules apply to any node with either a class of container_12 or grid_6.
share
|
...
How to work with complex numbers in C?
...m: Z1 + Z2 = %.2f %+.2fi\n", creal(sum), cimag(sum));
double complex difference = z1 - z2;
printf("The difference: Z1 - Z2 = %.2f %+.2fi\n", creal(difference), cimag(difference));
double complex product = z1 * z2;
printf("The product: Z1 x Z2 = %.2f %+.2fi\n", creal(product), cimag...
MFC CSplitterWnd的用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...// TODO: Add your specialized code here and/or call the base class
if (!m_wndSplitter.CreateStatic(this, 1, 2))
return FALSE;
if (!m_wndSplitter.CreateView(0, 0, RUNTIME_CLASS(CLeftView), CSize(160, 200), pContext) ||
!m_wndSplitter.CreateView(0, 1, RUNTIME_CLASS(...
Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
...ializer] deserialize:request.responseData error:nil];
// ...
}];
If you want to also target iOS 4, use __unsafe_unretained instead of __weak. Same behavior, but the pointer stays dangling instead of being automatically set to nil when the object is destroyed.
...
What are all the uses of an underscore in Scala?
...ed a curious question: " Can you name all the uses of “_”? ". Can you? If yes, please do so here. Explanatory examples are appreciated.
...
Commands out of sync; you can't run this command now
...ysqli, and get the error "Commands out of sync; you can't run this command now".
20 Answers
...
How do I create a Java string from the contents of a file?
I've been using the idiom below for some time now. And it seems to be the most wide-spread, at least on the sites I've visited.
...
Rename multiple files based on pattern in Unix
...
+1 Didn't even know about rename ... Now I can stop using a for loop with mv and sed ... Thanks!
– balpha
Jul 6 '09 at 11:27
...
What are the best practices for catching and re-throwing exceptions?
...database!";
die;
}
Logging or partial cleanup
Sometimes you do not know how to properly handle an exception inside a specific context; perhaps you lack information about the "big picture", but you do want to log the failure as close to the point where it happened as possible. In this case, yo...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...令】
Xcode中使用llvm编译器，公认为最好的C、C++、OC、Swift编译器。而lldb是llvm中的调试器，我们可以使用一些简单的命令进行调试，我还是把上面的循环代码作为测试代码。
断点调试中，使用po命令、print命令在Console控制台打...