大约有 38,000 项符合查询结果（耗时：0.0329秒） [XML]
Why would anybody use C over C++? [closed]
...
I'd be interested in more performance information. I don't understand why C would only perform better "occasionally." Given an average programmer, it may be that C++ makes performance easier to attain (good use of patterns) but a C program writ...
Is it faster to count down than it is to count up?
Our computer science teacher once said that for some reason it is more efficient to count down than to count up.
For example if you need to use a FOR loop and the loop index is not used somewhere (like printing a line of N * to the screen)
I mean that code like this:
...
Make an HTTP request with android
...This is a very old answer. I definitely won't recommend Apache's client anymore. Instead use either:
OkHttp
HttpUrlConnection
Original Answer
First of all, request a permission to access network, add following to your manifest:
<uses-permission android:name="android.permission.INTERNET" />
...
Select something that has more/less than x character
Was wondering if it's possible to select something that has more/less than x characters in SQL.
4 Answers
...
How much faster is C++ than C#?
...ong time, and also today still is in many cases. This is mainly due to the more advanced JIT optimizations being complicated to implement, and the really cool ones are only arriving just now.
So C++ is faster, in many cases. But this is only part of the answer. The cases where C++ is actually faste...
Visual Studio support for new C / C++ standards?
...es (variadic macros, long long) but beyond this we are unlikely to do much more in the C-99 space (at least in the short-term).
Jonathan Caves
Visual C++ Compiler Team.
This is a pretty sad state of affairs, but also makes sense if you suspect MS wants to lock users in: it makes it very hard to por...
In STL maps, is it better to use map::insert than []?
...
I updated to be more clear that map::insert never replaces. I left the else because I think using value is clearer than than the iterator. Only if the value's type had an unusual copy ctor or op== would it be different, and that type would...
How to read a file line-by-line into a list?
... close it), this is not really one of those cases - when the object has no more references to it it will be garbage collected and the file closed, which should happen immediately on error or not, when the list comprehension is done processing.
– Aaron Hall♦
M...
What is the coolest thing you can do in
...Check http://www.microsoft.com/technet/scriptcenter/funzone/agent.mspx for more information.
EDIT 2011-09-02
I recently discovered that Microsoft Agent is not natively installed on Windows 7. However it is offered as a separate download here. I have not tested this so cannot verify whether it opera...
Comparing Haskell's Snap and Yesod web frameworks
... the choice of Snap vs Yesod vs Happstack is less an issue of features and more one of personal taste. Whenever someone says that one of the frameworks doesn't have something that another one has, most of the time it will be pretty easy to pull in the missing functionality from the other framework ...