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Should private helper methods be static if they can be static
...ctually run a test.
class TestBytecodeSize {
private void doSomething(int arg) { }
private static void doSomethingStatic(int arg) { }
public static void main(String[] args) {
// do it twice both ways
doSomethingStatic(0);
doSomethingStatic(0);
TestBytecod...
How can I read a function's signature including default argument values?
...
import inspect
def foo(a, b, x='blah'):
pass
print(inspect.getargspec(foo))
# ArgSpec(args=['a', 'b', 'x'], varargs=None, keywords=None, defaults=('blah',))
However, note that inspect.getargspec() is deprecated since Python 3.0.
Python 3.0--3.4 recommends inspect.getfu...
How do the post increment (i++) and pre increment (++i) operators work in Java?
... 7; (a=8)
a = 5;
i=a++ + ++a + ++a; =>
i=5 + 7 + 8; (a=8)
The main point is that ++a increments the value and immediately returns it.
a++ also increments the value (in the background) but returns unchanged value of the variable - what looks like it is executed later.
...
Transferring ownership of an iPhone app on the app store
... This answer should be downvoted. It seems that the guy just converted his indie account to a business account, which obviously will keep all your app reviews and updates.
– samvermette
Oct 30 '12 at 21:53
...
General suggestions for debugging in R
...on(y) warning("don't want to use 'y'!")
> foo(1)
Error in bar(x + 2) : (converted from warning) don't want to use 'y'!
> traceback()
7: doWithOneRestart(return(expr), restart)
6: withOneRestart(expr, restarts[[1L]])
5: withRestarts({
.Internal(.signalCondition(simpleWarning(msg, call), ...
Paging UICollectionView by cells, not screen
...oid)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset {
*targetContentOffset = scrollView.contentOffset; // set acceleration to 0.0
float pageWidth = (float)self.articlesCollectionView.bounds.size.widt...
Can I use Class.newInstance() with constructor arguments?
...st).newInstance(args list);
Edit: according to the comments seems like pointing class and method names is not enough for some users. For more info take a look at the documentation for getting constuctor and invoking it.
sh...
How to programmatically set drawableLeft on Android button?
...tResources().getDrawable(R.drawable.smiley);
txtVw.setCompoundDrawablesWithIntrinsicBounds(img, null, null, null);
or
txtVw.setCompoundDrawablesWithIntrinsicBounds(R.drawable.smiley, 0, 0, 0);
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...
How do I get the time difference between two DateTime objects using C#?
...00);
Console.WriteLine(b.Subtract(a).TotalMinutes);
When executed this prints "30" since there is a 30 minute difference between the date/times.
The result of DateTime.Subtract(DateTime x) is a TimeSpan Object which gives other useful properties.
...
Easy way of running the same junit test over and over?
...) {
}
@Test
public void runsTenTimes() {
System.out.println("run");
}
}
With the above, it is possible to even do it with a parameter-less constructor, but I'm not sure if the framework authors intended that, or if that will break in the future.
If you are implementing yo...