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Oracle Differences between NVL and Coalesce
...ROWID| TT | 1 | 26 | 1 (0)| 00:00:01 |
|* 4 | INDEX RANGE SCAN | IX_TT_B | 7 | | 1 (0)| 00:00:01 |
|* 5 | FILTER | | | | | |
|* 6 | TABLE ACCESS BY INDEX ROWID| TT | 1 | 26...
ValueError: invalid literal for int() with base 10: ''
...for line in h:
if line.strip():
[int(next(h).strip()) for _ in range(4)] # list of integers
This way it processes 5 lines at the time. Use h.next() instead of next(h) prior to Python 2.6.
The reason you had ValueError is because int cannot convert an empty string to the integer. I...
What does axis in pandas mean?
...me process on dataframe2.
Basically,
stacking dataframe2 sideways.
E.g arranging books on a bookshelf.
More to it, since arrays are better representations to represent a nested n-dimensional structure compared to matrices! so below can help you more to visualize how axis plays an important rol...
Was PreferenceFragment intentionally excluded from the compatibility package?
...gineering time, but that's just a guess.
If so, can I easily target a range of devices (i.e. < 3.0 and >=3.0) or will I have to jump through hoops?
I consider it to be done "easily". Have two separate PreferenceActivity implementations, one using preference headers and PreferenceFragmen...
Hibernate, @SequenceGenerator and allocationSize
...o optimization before getting query Hibernate tries to assign value in the range of allocationSize and so try to avoid querying database for sequence. But this query will be executed every time if you set it to 1. This hardly makes any difference since if your data base is accessed by some other app...
How to read the RGB value of a given pixel in Python?
...')
width = photo.size[0] #define W and H
height = photo.size[1]
for y in range(0, height): #each pixel has coordinates
row = ""
for x in range(0, width):
RGB = photo.getpixel((x,y))
R,G,B = RGB #now you can use the RGB value
...
Cast Double to Integer in Java
... What happens when the double value is outside of the integer range? (like 2^33)
– nikdeapen
Oct 3 '14 at 1:52
5
...
Best way to randomize an array with .NET
...s a recursive algorithm:
To shuffle an array of size n (indices in the range [0..n-1]):
if n = 0
do nothing
if n > 0
(recursive step) shuffle the first n-1 elements of the array
choose a random index, x, in the range [0..n-1]
swap the element at index n-1 with...
How to test multiple variables against a value?
...r an item out of 2-4 possibilities, a tuple is still faster! If you can arrange for the most likely case to be first in the tuple, the win is even bigger: (my test: timeit.timeit('0 in {seq}'.format(seq=tuple(range(9, -1, -1)))))
– SingleNegationElimination
Oc...
Conventions for exceptions or error codes
...or codes and then switch on the result to see what error was thrown. Error ranges can be of help here, because if the only thing we are interested in is if we are in the presence of an error or not, it is simpler to check (e.g., an HRESULT error code greater or equal to 0 is success and less than ze...