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Why is the Java main method static?
... there would be ambiguity: which constructor should be called? Especially if your class looks like this:
public class JavaClass{
protected JavaClass(int x){}
public void main(String[] args){
}
}
Should the JVM call new JavaClass(int)? What should it pass for x?
If not, should the JVM ins...
Assign output of a program to a variable using a MS batch file
...ens=*" %%i in ('"tasklist | grep explorer"') do set VAR=%%i. Easier for me if there're no quotes in the command itself.
– Paul
Apr 22 at 23:31
add a comment
...
Is there a VB.NET equivalent of C# out parameters?
...nteger
Test(y)
End Sub
Sub Test(ByRef x As Integer)
x = 42
End Sub
(If you examine code in the framework (for example Double.TryParse), you may see the <OutAttribute> added to parameters, but that only makes a difference when the call is marshalled for COM interop or platform invoke.)
...
Java: Best way to iterate through a Collection (here ArrayList)
...uivalent to the other two variants for ArrayLists, but will be really slow if you use a LinkedList.
The second one is useful when you don't need the index of the element but might need to remove the elements as you iterate. But this has the disadvantage of being a little too verbose IMO.
The third...
Quickest way to compare two generic lists for differences
...an this, but even this will be vastly faster than your O(N * M) approach.
If you want to combine these, you could create a method with the above and then a return statement:
return !firstNotSecond.Any() && !secondNotFirst.Any();
One point to note is that there is a difference in results ...
Android SharedPreference security
...ctory with filesystem permissions set that only allow the UID that the specific application runs with to access them. So, they are private in so much as Linux file permissions restrict access to them, the same as on any Linux/Unix system.
Anyone with root level access to the device will be able to ...
log4j configuration via JVM argument(s)?
...{path to file}
where {path to file} should be prefixed with file:
Edit: If you are working with log4j2, you need to use
-Dlog4j.configurationFile={path to file}
Taken from answer https://stackoverflow.com/a/34001970/552525
...
Does free(ptr) where ptr is NULL corrupt memory?
... ptr to be deallocated, that is, made
available for further allocation. If ptr is a null pointer, no action occurs.
See ISO-IEC 9899.
That being said, when looking at different codebases in the wild, you'll notice people sometimes do:
if (ptr)
free(ptr);
This is because some C runtimes (I...
Android map v2 zoom to show all the markers
...(bounds, padding);
Finally move the map:
googleMap.moveCamera(cu);
Or if you want an animation:
googleMap.animateCamera(cu);
That's all :)
Clarification 1
Almost all movement methods require the Map object to have passed the layout process. You can wait for this to happen using the addOnGl...
Convert a date format in PHP
...
What if I get this date 0000-00-00 from mySQL? it returns a wrong date like 31/12/1969 ...
– Enrique
Apr 29 '10 at 22:20
...