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Python decorators in classes
...er than the accepted answer, because it allows the use of @ decorator syntax at the point of definition. If I have to put decorator calls at the end of the class, then it isn't clear that the functions are being decorated. It's a bit weird that you can't use @staticmethod on the decorator itself, bu...
Does Android keep the .apk files? if so where?
...n't have a rooted phone here but try this code out:
public class Testing extends Activity {
private static final String TAG = "TEST";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Fi...
What does .SD stand for in data.table in R
... like "Subset of Data.table". There's no significance to the initial ".", except that it makes it even more unlikely that there will be a clash with a user-defined column name.
If this is your data.table:
DT = data.table(x=rep(c("a","b","c"),each=2), y=c(1,3), v=1:6)
setkey(DT, y)
DT
# x y v
# ...
Accept server's self-signed ssl certificate in Java client
...ertificate to your JVM truststore or configure your client to
Option 1
Export the certificate from your browser and import it in your JVM truststore (to establish a chain of trust):
<JAVA_HOME>\bin\keytool -import -v -trustcacerts
-alias server-alias -file server.cer
-keystore cacerts.jks ...
How can I display just a portion of an image in HTML/CSS?
Let's say I want a way to display just the the center 50x50px of an image that's 250x250px in HTML. How can I do that. Also, is there a way to do this for css:url() references?
...
Volatile vs. Interlocked vs. lock
...re else that you access this.counter). It prevents any other threads from executing any other code which is guarded by locker.
Using locks also, prevents the multi-CPU reordering problems as above, which is great.
The problem is, locking is slow, and if you re-use the locker in some other place whic...
Label points in geom_point
...
Use geom_text , with aes label. You can play with hjust, vjust to adjust text position.
ggplot(nba, aes(x= MIN, y= PTS, colour="green", label=Name))+
geom_point() +geom_text(aes(label=Name),hjust=0, vjust=0)
EDIT: Label only valu...
Show AlertDialog in any position of the screen
...ndow().getAttributes();
wmlp.gravity = Gravity.TOP | Gravity.LEFT;
wmlp.x = 100; //x position
wmlp.y = 100; //y position
dialog.show();
Here x position's value is pixels from left to right. For y position value is from bottom to top.
...
How can I get screen resolution in java?
How can one get the screen resolution (width x height) in pixels?
10 Answers
10
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Convert a RGB Color Value to a Hexadecimal String
...
You can use
String hex = String.format("#%02x%02x%02x", r, g, b);
Use capital X's if you want your resulting hex-digits to be capitalized (#FFFFFF vs. #ffffff).
share...