大约有 16,000 项符合查询结果（耗时：0.0241秒） [XML]
support FragmentPagerAdapter holds reference to old fragments
...
You are running into a problem because you are instantiating and keeping references to your fragments outside of PagerAdapter.getItem, and are trying to use those references independently of the ViewPager. As Seraph says, you do have guarantees that a...
How do I address unchecked cast warnings?
...
The obvious answer, of course, is not to do the unchecked cast.
If it's absolutely necessary, then at least try to limit the scope of the @SuppressWarnings annotation. According to its Javadocs, it can go on local variables; this...
format statement in a string resource file
...d string format markers - %[POSITION]$[TYPE] (where [POSITION] is the attribute position and [TYPE] is the variable type), rather than the short versions, for example %s or %d.
Quote from Android Docs: String Formatting and Styling:
<string name="welcome_messages">Hello, %1$s! You have %2$d...
Input and output numpy arrays to h5py
... I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I save it to an h5py file?
Also, how do I read the same file and put it as a numpy array in a different...
Difference between staticmethod and classmethod
What is the difference between a function decorated with @staticmethod and one decorated with @classmethod ?
27 Answers
...
ab load testing
Can someone please walk me through the process of how I can load test my website using apache bench tool ( ab )?
5 Answer...
How should I ethically approach user password storage for later plaintext retrieval?
... they can be retrieved if/when the user has an issue (either to email a forgotten password link, walk them through over the phone, etc.) When I can I fight bitterly against this practice and I do a lot of ‘extra’ programming to make password resets and administrative assistance possible without...
How can I count the number of matches for a regex?
...is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
String hello = "HelloxxxHelloxxxHello";
Pat...
Case-INsensitive Dictionary with string key-type in C#
If I have a Dictionary<String,...> is it possible to make methods like ContainsKey case-insensitive?
5 Answers
...
List all the files that ever existed in a Git repository
... you have a clean way to list all the files that ever existed in specified branch?
4 Answers
...