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How do I generate random number for each row in a TSQL Select?
...with a uniform distribution:
ABS(CHECKSUM(NewId())) % 14
To change your range, just change the number at the end of the expression. Be extra careful if you need a range that includes both positive and negative numbers. If you do it wrong, it's possible to double-count the number 0.
A small warni...
Generating random integer from a range
I need a function which would generate a random integer in given range (including border values). I don't unreasonable quality/randomness requirements, I have four requirements:
...
What is an unsigned char?
...s as numbers, use:
signed char, which gives you at least the -127 to 127 range. (-128 to 127 is common)
unsigned char, which gives you at least the 0 to 255 range.
"At least", because the C++ standard only gives the minimum range of values that each numeric type is required to cover. sizeof (cha...
Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...
The range of floating point numbers usually exceeds the range of integers. By returning a floating point value, the functions can return a sensible value for input values that lie outside the representable range of integers.
Con...
Revert a range of commits in git
How can I revert a range of commits in git? From looking at the gitrevisions documentation, I cannot see how to specify the range I need. For example:
...
Plot a bar using matplotlib using a dictionary
...ib.pyplot as plt
D = {u'Label1':26, u'Label2': 17, u'Label3':30}
plt.bar(range(len(D)), list(D.values()), align='center')
plt.xticks(range(len(D)), list(D.keys()))
# # for python 2.x:
# plt.bar(range(len(D)), D.values(), align='center') # python 2.x
# plt.xticks(range(len(D)), D.keys()) # in pyt...
Numpy first occurrence of value greater than existing value
...ned.") and doesn't save another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(aa>N/2)[0][0]
10000 lo...
xkcd style graphs in MATLAB
...
yPoints = round(axesPos(4)/10);
limits = [xlim(hAxes) ylim(hAxes)];
ranges = [abs(limits(2) - limits(1)) abs(limits(4) - limits(3))];
backColor = get(get(hAxes, 'Parent'), 'Color');
xColor = get(hAxes, 'XColor');
yColor = get(hAxes, 'YColor');
line('Parent', hAxes, 'Color', xColor, 'L...
Generate a random double in a range
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To generate a random value between rangeMin and rangeMax:
Random r = new Random();
double randomValue = rangeMin + (rangeMax - rangeMin) * r.nextDouble();
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What happens if you static_cast invalid value to enum class?
...umeration type. The value is unchanged if the original value is within the range of the enumeration values (7.2). Otherwise, the resulting value is unspecified (and might not be in that range).
Let's look up the range of the enumeration values: [dcl.enum]/7
For an enumeration whose underlying ...