大约有 15,000 项符合查询结果（耗时：0.0263秒） [XML]
What is a singleton in C#?
What is a Singleton and when should I use it?
16 Answers
16
...
Why doesn't Java Map extend Collection?
I was surprised by the fact that Map<?,?> is not a Collection<?> .
9 Answers
...
Is there a list of Pytz Timezones?
I would like to know what are all the possible values for the timezone argument in the Python library pytz. How to do it?
7...
How do I pass a string into subprocess.Popen (using the stdin argument)?
If I do the following:
11 Answers
11
...
How do I check if a list is empty?
For example, if passed the following:
27 Answers
27
...
Creating a BLOB from a Base64 string in JavaScript
I have Base64-encoded binary data in a string:
12 Answers
12
...
How to run a Runnable thread in Android at defined intervals?
I developed an application to display some text at defined intervals in the Android emulator screen. I am using the Handler class. Here is a snippet from my code:
...
How do I call the default deserializer from a custom deserializer in Jackson
I have a problem in my custom deserializer in Jackson. I want to access the default serializer to populate the object I am deserializing into. After the population I will do some custom things but first I want to deserialize the object with the default Jackson behavior.
...
How do I avoid the specification of the username and password at every git push?
I git push my work to a remote Git repository.
18 Answers
18
...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
In a low level language (C, C++ or whatever): I have the choice in between either having a bunch of mutexes (like what pthread gives me or whatever the native system library provides) or a single one for an object.
...