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How do I determine whether an array contains a particular value in Java?
...h FindBugs will tell you is very naughty. Do not modify statics and do not allow other code to do so also. At an absolute minimum, the field should be private:
private static final String[] VALUES = new String[] {"AB","BC","CD","AE"};
(Note, you can actually drop the new String[]; bit.)
Reference a...
How do I find out which keystore was used to sign an app?
...ture algorithm name: SHA1withRSA
Then use the keytool again to print out all the aliases of your signing keystore:
keytool -list -keystore my-signing-key.keystore
You will get a list of aliases and their certificate fingerprint:
android_key, Jan 23, 2010, PrivateKeyEntry,
Certificate fingerpri...
Proper practice for subclassing UIView?
...Rect , and layoutSubviews . (I'm thinking in terms of setup and teardown callbacks.) In my case, I'm setting up my frame and internal views in layoutSubviews , but I'm not seeing anything onscreen.
...
What uses are there for “placement new”?
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Placement new allows you to construct an object in memory that's already allocated.
You may want to do this for optimization when you need to construct multiple instances of an object, and it is faster not to re-allocate memory each time y...
Specifying colClasses in the read.csv
... the read.csv function in R. In my data, the first column "time" is basically a character vector while the rest of the columns are numeric.
...
What is the difference between class and instance attributes?
...just look in each instance's __dict__ and the class's __dict__. It just usually doesn't matter very much whether immutable types are shared or not.
– abarnert
Oct 29 '14 at 22:58
1...
How does lucene index documents?
...links . But i heard that Lucene project has a special stemmer named "Snowball"? Do you heard anything about that ?
– M.Amrollahi
Apr 9 '10 at 17:44
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Java: Multiple class declarations in one file
...here's an official term for this approach though.
As for whether this actually changes between implementations - I highly doubt it, but if you avoid doing it in the first place, you'll never need to care :)
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Why are you not able to declare a class as static in Java?
...This method doesn't work
public static InnerClass getAnInnerClassStatically(){
return new InnerClass();
}
}
class OtherClass{
//Use of a static nested class:
private OuterClass.StaticNestedClass staticNestedClass = new OuterClass.StaticNestedClass();
//Doesn't work
...
add column to mysql table if it does not exist
...
OK this is really crude but someone's got to say it. if you are simply running a SQL script from the command line, you can give mysql the --force switch, which means keep going even if there's an error. then, just go for it. you just want...