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How to find all combinations of coins when given some dollar value
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It stems from the number of polynomial solutions n1 * coins(0) + n2 * coins(1) + ... + nN * coins(N-1) = money. So for money=0 and coins=List(1,2,5,10) the count for combinations (n1, n2, n3, n4) is 1 and the solution is (0, 0, 0, 0)....
Dealing with “Xerces hell” in Java/Maven?
...ce, the mere mention of the word Xerces is enough to incite murderous rage from developers. A cursory glance at the other Xerces questions on SO seem to indicate that almost all Maven users are "touched" by this problem at some point. Unfortunately, understanding the problem requires a bit of knowl...
How to write a multidimensional array to a text file?
...s in one line, I'm just being verbose to clarify things):
# Read the array from disk
new_data = np.loadtxt('test.txt')
# Note that this returned a 2D array!
print new_data.shape
# However, going back to 3D is easy if we know the
# original shape of the array
new_data = new_data.reshape((4,5,10))
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How does Java handle integer underflows and overflows and how would you check for it?
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If it overflows, it goes back to the minimum value and continues from there. If it underflows, it goes back to the maximum value and continues from there.
You can check that beforehand as follows:
public static boolean willAdditionOverflow(int left, int right) {
if (right < 0 &...
Disable autocomplete via CSS
...ross browser safe alternative, but I would recommend to go with the answer from RobertsonM (autocomplete="off").
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What are the differences between Autotools, Cmake and Scons?
...ort because it won't honor your sysroot specification and it'll pull stuff from out of your host system. If you break cross-compile support, it renders your code unusable for things like
OpenEmbedded and makes it "fun" for distributions trying to build their releases on a cross-compiler instead of ...
What does do?
...site as IE7 vs IE8 or 9. I always prefer the latest version of IE.
IE11
From Microsoft:
Starting with IE11, edge mode is the preferred document mode; it represents the highest support for modern standards available to the browser.
Use the HTML5 document type declaration to enable edge m...
Difference between SurfaceView and View?
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From your answer I get the feeling it is better to use a class derived from View than SurfaceView. Or am I getting something wrong? This would be opposed to the majority of 2D game development tutorials.
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Lists in ConfigParser
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There is nothing stopping you from packing the list into a delimited string and then unpacking it once you get the string from the config. If you did it this way your config section would look like:
[Section 3]
barList=item1,item2
It's not pretty but ...
How do you test that a Python function throws an exception?
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Use TestCase.assertRaises (or TestCase.failUnlessRaises) from the unittest module, for example:
import mymod
class MyTestCase(unittest.TestCase):
def test1(self):
self.assertRaises(SomeCoolException, mymod.myfunc)
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