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Python: Making a beep noise
...import winsound
frequency = 2500 # Set Frequency To 2500 Hertz
duration = 1000 # Set Duration To 1000 ms == 1 second
winsound.Beep(frequency, duration)
The winsound.Beep() can be used wherever you want the beep to occur.
...
How do I use a Boolean in Python?
...fine bool as below:
def __bool__(self):
return self != 0
for bool(100), 100 !=0 will return True. So
bool(100) == True
you can easily check that bool(0) will be False. with this for instances of int class only 0 will return False.
another example= bool([1,2,3])
[1,2,3] has no __bool__() me...
jquery .html() vs .append()
...ng a new jQuery object on every iteration. E.g. the quickest way to create 100 divs with jQuery:
jQuery(Array(101).join('<div></div>'));
There are also issues of readability and maintenance to take into account.
This:
$('<div id="' + someID + '" class="foobar">' + content + ...
Numpy argsort - what is it doing?
...: x = np.random.random(10**5)
In [66]: %timeit using_indexed_assignment(x)
100 loops, best of 3: 9.32 ms per loop
In [70]: %timeit using_rankdata(x)
100 loops, best of 3: 10.6 ms per loop
In [56]: %timeit using_argsort_twice(x)
100 loops, best of 3: 16.2 ms per loop
In [59]: %timeit using_digitiz...
How can I click a button behind a transparent UIView?
...ller with one sub view. the subview takes up the center of the screen with 100 px margins on all sides. We then add a bunch of little stuff to click on inside that subview. We are only using the subview to take advantage of the new frame ( x=0, y=0 inside the subview is actually 100,100 in the paren...
There is already an open DataReader associated with this Command which must be closed first
...tive Result Sets (MARS) see msdn.microsoft.com/en-us/library/h32h3abf(v=vs.100).aspx. Consider reading up on Disadvantages of MARS too stackoverflow.com/questions/374444/…
– Diganta Kumar
Dec 12 '12 at 23:31
...
The request was aborted: Could not create SSL/TLS secure channel
...add this at the beginning:
// using System.Net;
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
// Use SecurityProtocolType.Ssl3 if needed for compatibility reasons
And now, it works perfectly.
ADDENDUM
As mentioned by Robin Fre...
In C#, how do I calculate someone's age based on a DateTime type birthday?
...dob = int.Parse(dateOfBirth.ToString("yyyyMMdd"));
int age = (now - dob) / 10000;
Or alternatively without all the type conversion in the form of an extension method. Error checking omitted:
public static Int32 GetAge(this DateTime dateOfBirth)
{
var today = DateTime.Today;
var a = (toda...
Numpy - add row to array
...rt to numpy. Here are timing tests using python 3.6 vs. numpy 1.14, adding 100 rows, one at a time:
import numpy as np
from time import perf_counter, sleep
def time_it():
# Compare performance of two methods for adding rows to numpy array
py_array = [[0, 1, 2], [0, 2, 0]]
py_row = [4,...
Where are my postgres *.conf files?
...rt number here;
# adjust it in the service file instead.
max_connections = 100 # (change requires restart)
# Note: Increasing max_connections costs ~400 bytes of shared memory per
# connection slot, plus lock space (see max_locks_per_transaction).
#superuser_reserved_connections = 3 # (ch...