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recursion versus iteration
...d the n th triangular number:
Using an iterative algorithm:
//Triangular.java
import java.util.*;
class Triangular {
public static int iterativeTriangular(int n) {
int sum = 0;
for (int i = 1; i <= n; i ++)
sum += i;
return sum;
}
public static void main(Stri...
When should null values of Boolean be used?
Java boolean allows values of true and false while Boolean allows true , false , and null . I have started to convert my boolean s to Boolean s. This can cause crashes in tests such as
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Eclipse jump to closing brace
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For me this only works with JAVA. When I edit javascript code inside an JSP file, it doesn't work.
– John Henckel
Feb 22 '16 at 16:46
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Clearing coverage highlighting in Eclipse
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For Clover you can hide the colors in the java editor by going to "Clover | Coverage Explorer" -> Coverage in Editors > Show None. Hides all red/green coverage areas in open Java editors.
– Vineet Bhatia
Dec 5 '14 at 14:21...
Android Quick Actions UI Pattern
...nk that's done in "Contacts/src/com/android/contacts/ui/QuickContactWindow.java", but I am not completely sure.
I you google for QuickContact android, there are a lot of images that show exactly the kind of menu that you want, so it seems likely that it is indeed called QuickContact in that context...
How to write log base(2) in c/c++
... There is also a nice bit-twiddling method for this (taken from Java's Integer.highestOneBit(int) method): i |= (i >> 1); i |= (i >> 2); i |= (i >> 4); i |= (i >> 8); i |= (i >> 16); return i - (i >>> 1);
– Joey
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Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
...DISTINCT has two meanings in JPQL, and here, we need it to deduplicate the Java object references returned by getResultList on the Java side, not the SQL side. Check out this article for more details.
As long as you fetch at most one collection using JOIN FETCH, you will be fine.
By using multipl...
Why does C++ need a separate header file?
... "inline".
If your more general question is, "why isn't C++ identical to Java?", then I have to ask, "why are you writing C++ instead of Java?" ;-p
More seriously, though, the reason is that the C++ compiler can't just reach into another translation unit and figure out how to use its symbols, in ...
Should methods that throw RuntimeException indicate it in method signature?
...s whether the exception has to be explicitly handled.
Declaring it in the javadoc is a better approach since it allows someone to handle it if they think it is necessary, but knowing they can ignore it if they want. This makes the separation between checked and unchecked clear.
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What is a build tool?
For past 4 years, I have been programming with Eclipse (for Java), and Visual Studio Express (for C#). The IDEs mentioned always seemed to provide every facility a programmer might ask for (related to programming, of course).
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