大约有 44,000 项符合查询结果（耗时：0.0543秒） [XML]
getSupportActionBar from inside of Fragment ActionBarCompat
...n a v7 ActionBar that I would cast to if I needed the extra functionality. Now my Fragments have to be aware of what type of Activity they are hosted in.
– Paul
Aug 19 '13 at 18:48
...
How can I convert an Integer to localized month name in Java?
...here is an easier way to make a monthed calendar though, I do this in code now and I'm not so sure.
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
public String formatMonth(int month, Locale locale) {
DateFormat f...
++someVariable vs. someVariable++ in JavaScript
...crement the variable; the value of the expression is the original value"
Now when used as a standalone statement, they mean the same thing:
x++;
++x;
The difference comes when you use the value of the expression elsewhere. For example:
x = 0;
y = array[x++]; // This will get array[0]
x = 0;
y...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...A VALUE(although 2147483648L is) in Java. The compiler literally does not know what it is, or how to use it. So it whines.
1024 is a valid int in Java, and a valid int multiplied by another valid int, is always a valid int. Even if it's not the same value that you would intuitively expect because t...
Hash and salt passwords in C#
...
The nuget package is now Microsoft.AspNetCore.Cryptography.KeyDerivation.
– James Blake
Oct 4 '17 at 17:15
add a comment
...
Signal handling with multiple threads in Linux
...al is received? Let's say I wrote a custom signal handler for SIGUSR1, and now I'm sending that signal to the process. The root thread will get that signal. Maybe it's in the middle of some function at that moment. What is going to happen?
– user500944
Jul 26 '...
WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...e trusted to accurately represent the state of the data in the table right now. It can, however, but can be trusted to check data added and modified in the future.
Additionally, untrusted constraints are disregarded by the query optimiser.
The code to enable check constraints and foreign key const...
Rails 4: assets not loading in production
...hen I was facing this problem changing that line had solved it for me, but now I'm facing it again (I don't know how I keep ending up in these situations.) and this isn't enough. Any more suggestions as to what might be wrong?
– IIllIIll
Nov 29 '15 at 22:45
...
How can I create directory tree in C++/Linux?
...an only show the
presence of bugs, never their absence).
The code shown is now v1.16; there have been cosmetic or administrative
changes made since v1.13 (such as use mkpath.h instead of jlss.h and
include <unistd.h> unconditionally in the test code only).
It's reasonable to argue that "syssta...
IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
...on the saveInstanceState method. This was messing things up...
This is a known bug in the support package.
If you need to save the instance and add something to your outState Bundle you can use the following:
@Override
protected void onSaveInstanceState(Bundle outState) {
outState.putString(...