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How to get the last day of the month?
...ing at the documentation for the calendar module, but a method called monthrange provides this information:
monthrange(year, month)
Returns weekday of first day of the month and number of days in month, for the specified year and month.
>>> import calendar
>>> cale...
How to compare dates in datetime fields in Postgresql?
I have been facing a strange scenario when comparing between dates in postgresql(version 9.2.4 in windows). I have a column in my table say update_date with type 'timestamp without timezone'. Client can search over this field with only date (i.e: 2013-05-03) or date with time (i.e: 2013-05-03 12:20:...
How to add 30 minutes to a JavaScript Date object?
... @trevorgrayson If a parameter you specify is outside of the expected range, setMinutes() attempts to update the date information accordingly. For example, if you use 100, the hours will be incremented by 1 and 40 will be used for minutes.
– Mihai Crăiță
...
When do you use POST and when do you use GET?
... an If-Modified-Since, If-Unmodified-Since, If-Match, If-None-Match, or If-Range header field. A conditional GET method requests that the entity be transferred only under the circumstances described by the conditional header field(s). The conditional GET method is intended to reduce unnecessary netw...
Are negative array indexes allowed in C?
... UB. Merely computing somearray-2 is undefined unless the result is in the range from the start of somearray to 1 past its end.
– RBerteig
Aug 13 '10 at 9:12
35
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Random float number generation
...eturn rand() / (RAND_MAX + 1.);
}
and to generate a random number in the range from [M,N):
double randMToN(double M, double N)
{
return M + (rand() / ( RAND_MAX / (N-M) ) ) ;
}
share
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imp...
How do I handle the window close event in Tkinter?
...op stopped only by setting 'running' to 'False'
while running:
for i in range(200):
if not running:
break
cv.create_oval(i, i, i+1, i+1)
root.update()
This terminates graphics activity nicely. You only need to check running at the right place(s).
...
Change branch base
... and checkout to a new 'PRO' branch from 'master'
Take (cherry-pick) the range of commits of Previous PRO branch into the new PRO branch:
$ git cherry-pick commit4^..commit5 # cherry-pick range of commits
# note the '^' after commit4
Now, if all is ok, then do force (-f) push to remote PRO br...
Adding an arbitrary line to a matplotlib plot in ipython notebook
...ort numpy as np
import matplotlib.pyplot as plt
np.random.seed(5)
x = np.arange(1, 101)
y = 20 + 3 * x + np.random.normal(0, 60, 100)
plt.plot(x, y, "o")
# draw vertical line from (70,100) to (70, 250)
plt.plot([70, 70], [100, 250], 'k-', lw=2)
# draw diagonal line from (70, 90) to (90, 200)
plt...
Seeding the random number generator in Javascript
...ive) equivalent to Math.random(), if you want random numbers of a specific range, read this article on MDN. If you only want the raw bits, simply remove the final division operation.
Another thing to note are the limitations of JS. Numbers can only represent whole integers up to 53-bit resolution. ...