大约有 22,000 项符合查询结果（耗时：0.0340秒） [XML]
When should one use RxJava Observable and when simple Callback on Android?
...r:
inputObservable.debounce(1, TimeUnit.SECONDS).subscribe(new Action1<String>() {
@Override
public void call(String s) {
// use Retrofit to create autocompletedata
}
});
I won't create the Callback variant but you will understand ...
Further understanding setRetainInstance(true)
...tribute with a unique ID.
Supply the android:tag attribute with a unique string.
If you provide neither of the previous two, the system uses the ID of the container view.
This strongly implies that if you do setContentView(R.layout.whatever) in Activity.onCreated() and that layout contains ...
Is there a stopwatch in Java?
...TimeUnit.MILLISECONDS);
log.info("that took: " + stopwatch); // formatted string like "12.3 ms"
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How to retrieve a module's path?
...(__file__) can also be tricky. At least on my system, it returns an empty string if you call it from the same directory as the file. ex.
# foo.py
import os
print '__file__ is:', __file__
print 'os.path.dirname(__file__) is:', os.path.dirname(__file__)
will output:
__file__ is: foo.py
os.path.d...
Exporting a function in shell
...
Functions are not exportable by nature. However you can export strings, so I have a little trick here:
func="$(typeset -f funcname)"
export func
To import the function, re-define it from the exported string:
# in subshell
eval "$func"
...
NameValueCollection vs Dictionary [duplicate]
...
NameValueCollection is string typed whereas Dictionary leverages generics to allow type variance. See Benefits of Generics.
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Why does Hibernate require no argument constructor?
...r class contains a lot of constructors
public class Person {
private String name;
private Integer age;
public Person(String name, Integer age) { ... }
public Person(String name) { ... }
public Person(Integer age) { ... }
}
As you can see, you deal with a issue of inconsiste...
Order a MySQL table by two columns
...t`,
`date` AS `date`,
MATCH (`text`) AGAINST (:string) AS `match`
FROM int_art_fulltext
WHERE MATCH (`text`) AGAINST (:string IN BOOLEAN MODE)
LIMIT 0,101
) t,
(
SELECT @row := 0
) r
ORD...
What is getattr() exactly and how do I use it?
...ecause you don't know in advance which attribute you want (it comes from a string). Very useful for meta-programming.
you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will return 5.
...
What actually causes a Stack Overflow error? [duplicate]
...lass Test
{
final static int CALLS = 710;
public static void main(String[] args)
{
final Functor[] functors = new Functor[CALLS];
for (int i = 0; i < CALLS; i++)
{
final int finalInt = i;
functors[i] = new Functor()
{
...