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How do I connect to a MySQL Database in Python?
...et
numrows = cursor.rowcount
# Get and display one row at a time
for x in range(0, numrows):
row = cursor.fetchone()
print row[0], "-->", row[1]
# Close the connection
db.close()
Reference here
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How to make an Android device vibrate?
...omplex Vibrations
There are multiple SDKs that offer a more comprehensive range of haptic feedback. One that I use for special effects is Immersion's Haptic Development Platform for Android.
Troubleshooting
If your device won't vibrate, first make sure that it can vibrate:
// Get instance of Vib...
Algorithm to generate all possible permutations of a list?
...or p in permute(xs, low + 1):
yield p
for i in range(low + 1, len(xs)):
xs[low], xs[i] = xs[i], xs[low]
for p in permute(xs, low + 1):
yield p
xs[low], xs[i] = xs[i], xs[low]
for p in permute([1, 2, 3, 4...
Creating an array of objects in Java
...leStream, IntStream, LongStream which additionally provide generators like range rangeClosed and few others.
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Difference between two dates in MySQL
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Note: When using TIMEDIFF function, the time value can range from "-838:59:59" to "838:59:59". w3schools.com/SQl/func_mysql_timediff.asp
– cREcker
Aug 3 '17 at 12:21
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Looping over a list in Python
....
list1 = [12, 15, 22, 54, 21, 68, 9, 73, 81, 34, 45]
list2 = []
for i in range(1, len(list1)):
change = list1[i] - list1[i-1]
list2.append(change)
Note that while len(list1) is 11 (elements), len(list2) will only be 10 elements because we are starting our for loop from element with index 1 i...
Rank items in an array using Python/NumPy, without sorting array twice
...temp = array.argsort()
ranks = numpy.empty_like(temp)
ranks[temp] = numpy.arange(len(array))
This avoids sorting twice by inverting the permutation in the last step.
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Generate random numbers following a normal distribution in C/C++
...d standard deviation of a normal variable. An obvious drawback is that the range is limited to ±6 – unlike a true normal distribution.
The Box-Muller transform. This is listed above, and is relatively simple to implement. If you need very precise samples, however, be aware that the Box-Muller tra...
Understanding the Gemfile.lock file
...mfile would not provide the same guarantee, because gems usually declare a range of versions for their dependencies.
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How many database indexes is too many?
... new rows are added with values that are "in the middle" of existing value ranges for that column. This can be mitigated by partitioning and having the new data loads aligned with the partitioning scheme, and by using direct path inserts.
To address your question more directly, I think it is probab...