大约有 40,657 项符合查询结果（耗时：0.0303秒） [XML]
When should one use a spinlock instead of mutex?
... a thread tries to lock a mutex and it does not succeed, because the mutex is already locked, it will go to sleep, immediately allowing another thread to run. It will continue to sleep until being woken up, which will be the case once the mutex is being unlocked by whatever thread was holding the lo...
In C#, why is String a reference type that behaves like a value type?
A String is a reference type even though it has most of the characteristics of a value type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object.
...
Why is it possible to recover from a StackOverflowError?
I'm surprised at how it is possible to continue execution even after a StackOverflowError has occurred in Java.
5 Answers...
Check if a string matches a regex in Bash script
One of the arguments that my script receives is a date in the following format: yyyymmdd .
5 Answers
...
What is a clearfix?
...uts.
It's worth noting that today, the use of floated elements for layout is getting more and more discouraged with the use of better alternatives.
display: inline-block - Better
Flexbox - Best (but limited browser support)
Flexbox is supported from Firefox 18, Chrome 21, Opera 12.10, and Inter...
C++11 rvalues and move semantics confusion (return statement)
...p;rval_ref = return_vector();
The first example returns a temporary which is caught by rval_ref. That temporary will have its life extended beyond the rval_ref definition and you can use it as if you had caught it by value. This is very similar to the following:
const std::vector<int>& r...
AES vs Blowfish for file encryption
I want to encrypt a binary file. My goal is that to prevent anyone to read the file who doesn't have the password.
7 Answer...
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 na...
What is this Javascript “require”?
...trying to get Javascript to read/write to a PostgreSQL database. I found this project on github. I was able to get the following sample code to run in node.
...
Service vs IntentService in the Android platform
...
Tejas Lagvankar wrote a nice post about this subject.
Below are some key differences between Service and IntentService.
When to use?
The Service can be used in tasks with no UI, but shouldn't be too long. If you need to perform long tasks, you must use threads wi...