大约有 43,000 项符合查询结果（耗时：0.0572秒） [XML]
What is a good use case for static import of methods?
...you overuse the static import feature, it can make your program unreadable and unmaintainable, polluting its namespace with all the static members you import. Readers of your code (including you, a few months after you wrote it) will not know which class a static member comes from. Importing all of ...
How can I open a Shell inside a Vim Window?
I can open a shell by using the :shell command in Vim, however I can't edit a file and at the same time use the shell.
10 A...
What is the proper way to comment functions in Python?
...nt.
def add(self):
"""Create a new user.
Line 2 of comment...
And so on...
"""
That's three double quotes to open the comment and another three double quotes to end it. You can also use any valid Python string. It doesn't need to be multiline and double quotes can be replaced by ...
What's wrong with cplusplus.com?
...the container. Its because std::remove works with a pair of iterators only and does not know anything about the container which actually contains the items. In fact, it's not possible for std::remove to know the underlying container, because there is no way it can go from a pair of iterators to disc...
Integrate ZXing in Android Studio
I'll start explaining all the steps I have done and in the end what is the problem.
5 Answers
...
Wrapping synchronous code into asynchronous call
... occur up to 3 times during one user request, depending on the cache state and parameters that user provides. Each call takes about 1-2 seconds to complete. The method itself is synchronous call to the service and there is no possibility to override the implementation.
So the synchronous call to t...
Is it possible to make the -init method private in Objective-C?
...release" method of creating singletons. It's virtually always unnecessary and is just adding complication for no real significant advantage.
Instead, just write your code such that your +sharedWhatever method is how you access a singleton, and document that as the way to get the singleton instance...
How do I manage MongoDB connections in a Node.js web application?
...tive says:
You open do MongoClient.connect once when your app boots up and reuse
the db object. It's not a singleton connection pool each .connect
creates a new connection pool.
So, to answer your question directly, reuse the db object that results from MongoClient.connect(). This gives yo...
What does the star operator mean, in a function call?
...
s = sum(1, 2)
The double star ** does the same, only using a dictionary and thus named arguments:
values = { 'a': 1, 'b': 2 }
s = sum(**values)
You can also combine:
def sum(a, b, c, d):
return a + b + c + d
values1 = (1, 2)
values2 = { 'c': 10, 'd': 15 }
s = sum(*values1, **values2)
w...
ASP.NET MVC on IIS 7.5
...
ASP.NET 4 was not registered in IIS. Had to run the following command in the command line/run
32bit (x86) Windows
%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -ir
64bit (x64) Windows
%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -ir
Note from ...