大约有 19,300 项符合查询结果（耗时：0.0451秒） [XML]
Why do I have to access template base class members through the this pointer?
...se
int A;
#endif
static const int x = 2;
template <typename T> void foo() { A *x = 0; }
if A is a type, that declares a pointer (with no effect other than to shadow the global x). If A is an object, that's multiplication (and barring some operator overloading it's illegal, assigning to a...
When should I mock?
...depath through a single method. When the execution of a method passes outside of that method, into another object, and back again, you have a dependency.
When you test that code path with the actual dependency, you are not unit testing; you are integration testing. While that's good and necessa...
Reduce, fold or scan (Left/Right)?
...
Scan is used for some processing order of items from left or right hand side, then we can make use of previous result in subsequent calculation. That means we can scan items. Will always result a collection.
LEFT_REDUCE method works similar to REDUCE Method.
RIGHT_REDUCE is opposite to reduceLef...
List of Big-O for PHP functions
...e noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
...
Tactics for using PHP in a high-load site
...e to use is placeholders in your queries. It's smart enough to use server side prepares and other optimizations for you as well.
You probably don't want to break your database up at this point. If you do find that one database isn't cutting, there are several techniques to scale up, depending on you...
is there a css hack for safari only NOT chrome?
...ltiple other hacks.
NOTES: like above, the double media query is NOT an accident -- it rules out many older browsers that cannot handle media query nesting. -- The missing space after one of the 'and's is important as well. This is after all, a hack... and the only one that works for 6.1 and all new...
What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
The way I understand it, if a client-side script running on a page from foo.com wants to request data from bar.com, in the request it must specify the header Origin: http://foo.com , and bar must respond with Access-Control-Allow-Origin: http://foo.com .
...
Best practices/guidance for maintaining assembly version numbers
...ome up with an easy to use versioning system. From what you have already said in your question it is clear that you have understood one important point, the assembly version numbers are not synonymous with the product version. One is technically driven, and the other is driven by the business.
The ...
RabbitMQ and relationship between channel and connection
...age broker, whereas a Channel is a virtual connection (AMQP connection) inside it. This way you can use as many (virtual) connections as you want inside your application without overloading the broker with TCP connections.
You can use one Channel for everything. However, if you have multiple threads...
Pass props to parent component in React.js
...at child prop!: if the child has a prop, then it is because its parent provided that prop to the child! Why do you want the child to pass back the prop to the parent, while the parent obviously already has that prop?
Better implementation
Child: it really does not have to be more complicated than ...