大约有 47,000 项符合查询结果（耗时：0.0730秒） [XML]
support FragmentPagerAdapter holds reference to old fragments
...r app is killed, this information is restored when you relaunch your app.
Now consider that you have viewed a few pages, Fragments A, B and C. You know that these have been added to the fragment manager. Because you are using FragmentPagerAdapter and not FragmentStatePagerAdapter, these fragments w...
How do I define and use an ENUM in Objective-C?
... that's #imported into your header), because otherwise the compiler won't know what size to make the PlayerState ivar. Other than that, it looks ok to me.
share
|
improve this answer
|
...
Use 'class' or 'typename' for template parameters? [duplicate]
...particularly clear, to be honest. in T::A *obj; the language, as far as I know, should parse the statement as a declaration because of the declaration rule: anything that looks like a declaration, even if it ambiguously looks like something else, should resolve into a declaration[0]. I also didn't f...
How do I programmatically determine operating system in Java?
... Please note that the access to "com/sun/javafx/*" is discouraged now (checked it with JDK 1.8.0_121).
– Michael Marton
Jan 14 '18 at 12:27
1
...
Why is rbindlist “better” than rbind?
...
rbindlist is an optimized version of do.call(rbind, list(...)), which is known for being slow when using rbind.data.frame
Where does it really excel
Some questions that show where rbindlist shines are
Fast vectorized merge of list of data.frames by row
Trouble converting long list of data.fra...
Trying to mock datetime.date.today(), but not working
...f today(cls):
return cls(2010, 1, 1)
datetime.date = NewDate
And now you could do:
>>> datetime.date.today()
NewDate(2010, 1, 1)
share
|
improve this answer
|
...
Interface or an Abstract Class: which one to use?
...{
public function eat() {
// peeling
// chew
}
}
Now I give you an apple and you eat it.
What does it taste like? It tastes like an apple.
<?php
$apple = new Apple();
$apple->eat();
// Now I give you a fruit.
$fruit = new Fruit();
$fruit->eat();
What does that...
What is the JavaScript convention for no operation?
...s shown here:
setTimeout(function() {
console.log('Start: ', Date.now());
Function.prototype();
console.log('End : ', Date.now());
}, 1000);
Although this is a "true noop" since most browsers seem to do nothing to execute the noop defined this way (and hence save CPU cyc...
Android: Tabs at the BOTTOM
...ust watch the content of the FrameLayout(@id/tabcontent), because I don't know how it will handle in case of scrolling... In my case it works because I used ListView as the content of my tabs. :)
Hope it helps.
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.a...
What exactly does Perl's “bless” do?
...h a class.
package MyClass;
my $object = { };
bless $object, "MyClass";
Now when you invoke a method on $object, Perl know which package to search for the method.
If the second argument is omitted, as in your example, the current package/class is used.
For the sake of clarity, your example migh...