大约有 47,000 项符合查询结果（耗时：0.0775秒） [XML]
Check if OneToOneField is None in Django
...elect_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object.onetoonerevrelattr != None
– class stacker
...
Difference between pre-increment and post-increment in a loop?
Is there a difference in ++i and i++ in a for loop? Is it simply a syntax thing?
22 Answers
...
How to allocate aligned memory only using the standard library?
I just finished a test as part of a job interview, and one question stumped me, even using Google for reference. I'd like to see what the StackOverflow crew can do with it:
...
Easy way to write contents of a Java InputStream to an OutputStream
... but I suspect I'm just missing something which would make my life easier (and the code clearer).
23 Answers
...
How to construct a REST API that takes an array of id's for the resources
...
@uclajatt, REST is an architectural model and not a protocol and if you study the major REST APIs available today, you will see that there are multiple ways of implementing it. The approach that I am suggesting is probably one of the closest to the concept since it a...
What does “Document-oriented” vs. Key-Value mean when talking about MongoDB vs Cassandra?
...hat does going with a document based NoSQL option buy you over a KV store, and vice-versa?
4 Answers
...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
...
Microsoft has a blog entry What AnyCPU Really Means As Of .NET 4.5 and Visual Studio 11:
In .NET 4.5 and Visual Studio 11 the cheese has been moved. The
default for most .NET projects is again AnyCPU, but there is more than
one meaning to AnyCPU now. There is an additional sub-type o...
Once upon a time, when > was faster than < … Wait, what?
...tc. He also explains that the actual meaning of depth values (which is top and which isn't) can also be customized. I understand so far. And then the author says something unbelievable:
...
One DbContext per web request… why?
...g how to set up Entity Framework's DbContext so that only one is created and used per HTTP web request using various DI frameworks.
...
What are the rules for calling the superclass constructor?
...bar
}
};
More info on the constructor's initialization list here and here.
share
|
improve this answer
|
follow
|
...