大约有 40,000 项符合查询结果（耗时：0.0523秒） [XML]
What is the most efficient/elegant way to parse a flat table into a tree?
...
Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax.
WITH RECURSIVE MyTree AS (
SELECT * FROM MyTable WHERE ParentId IS NULL
UNION ALL
SELECT m.* FROM MyTABLE AS m JOIN MyTree AS t ON m.ParentI...
Android Location Providers - GPS or Network Provider?
... MACID): A special location provider for
receiving locations without actually initiating a location fix. This
provider can be used to passively receive location updates when other
applications or services request them without actually requesting the
locations yourself. This provider will ret...
showDialog deprecated. What's the alternative?
...droid/app/Activity.html
public final void showDialog (int id) Added in API level 1
This method was deprecated in API level 13. Use the new DialogFragment
class with FragmentManager instead; this is also available on older
platforms through the Android compatibility package.
Simple ...
How can I tell how many objects I've stored in an S3 bucket?
...
There is no way, unless you
list them all in batches of 1000 (which can be slow and suck bandwidth - amazon seems to never compress the XML responses), or
log into your account on S3, and go Account - Usage. It seems the billing dept knows exactly how many object...
Intersection and union of ArrayLists in Java
...mentation without using any third-party library. Main advantage over retainAll, removeAll and addAll is that these methods don't modify the original lists input to the methods.
public class Test {
public static void main(String... args) throws Exception {
List<String> list1 = ne...
Explain the use of a bit vector for determining if all characters are unique
...ge for bits. Every bit in integer value can be treated as a flag, so eventually int is an array of bits (flag). Each bit in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences betwe...
How do I use a compound drawable instead of a LinearLayout that contains an ImageView and a TextView
...d bottom.
In your case, you do not need the LinearLayout and ImageView at all. Just add android:drawableLeft="@drawable/up_count_big" to your TextView.
See TextView#setCompoundDrawablesWithIntrinsicBounds for more info.
sh...
How to get the tag HTML with JavaScript / jQuery?
... to the html element!? I don't think performance should be a concern, generally. Anyway, this is actually the better answer, but it came in WAY after the award.
– posit labs
Apr 21 '15 at 1:08
...
Android studio: why are minSdkVersion and targetSdkVersion specified both in AndroidManifest.xml and
...ties and generate another apk.
You can leave the manifest as it is and do all configuration in build.gradle. You can safely remove
<uses-sdk></uses-sdk>
from manifest as well as version codes.
share
...
What is the difference between javac and the Eclipse compiler?
...
Eclipse has implemented its own compiler called as Eclipse Compiler for Java (ECJ).
It is different from the javac, the compiler that is shipped with Sun JDK. One notable difference is that the Eclipse compiler lets you run code that didn't actually properly compile...