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Which is faster in Python: m>x m>**.5 or math.sqrt(m>x m>)?
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math.sqrt(m>x m>) is significantly faster than m>x m>**0.5.
import math
N = 1000000
%%timeit
for i in range(N):
z=i**.5
10 loops, best of 3: 156 ms per loop
%%timeit
for i in range(N):
z=math.sqrt(i)
10 loops, best of 3: 9...
plot with custom tem>x m>t for m>x m> am>x m>is points
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You can manually set m>x m>ticks (and yticks) using pyplot.m>x m>ticks:
import matplotlib.pyplot as plt
import numpy as np
m>x m> = np.array([0,1,2,3])
y = np.array([20,21,22,23])
my_m>x m>ticks = ['John','Arnold','Mavis','Matt']
plt.m>x m>ticks(m>x m>, my_m>x m>ticks)
plt.plot(...
Matplotlib - Move m>X m>-Am>x m>is label downwards, but not m>X m>-Am>x m>is Ticks
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use labelpad parameter:
pl.m>x m>label("...", labelpad=20)
or set it after:
am>x m>.m>x m>am>x m>is.labelpad = 20
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How do I use vim registers?
...y know of one instance using registers is via Ctrl R * whereby I paste tem>x m>t from a clipboard.
16 Answers
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ASP.NET MVC: Unit testing controllers that use UrlHelper
One of my controllers actions, one that is being called in an Ajam>x m> request, is returning an URL to the client side so it can do a redirection. I'm using Url.RouteUrl(..) and during my unit tests this fails since the Controller.Url parameter is not pre-filled.
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Em>x m>tract month and year from a zoo::yearmon object
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Use the format() method for objects of class "yearmon". Here is your em>x m>ample date (properly created!)
date1 <- as.yearmon("Mar 2012", "%b %Y")
Then we can em>x m>tract the date parts as required:
> format(date1, "%b") ## Month, char, abbreviated
[1] "Mar"
> format(date1, "%Y") ## Year w...
How em>x m>actly does the python any() function work?
...st) would be False. If lst also contained any of the following [-1, True, "m>X m>", 0.00001] (all of which evaluate to True) then any(lst) would be True.
In the code you posted, m>x m> > 0 for m>x m> in lst, this is a different kind of iterable, called a generator em>x m>pression. Before generator em>x m>pressions were ...
Union Vs Concat in Linq
...rences, thus they all are considered different. When you cast to base type m>X m>, reference is not changed.
If you will override Equals and GetHashCode (used to select distinct items), then items will not be compared by reference:
class m>X m>
{
public int ID { get; set; }
public override bool Equ...
Volatile vs. Interlocked vs. lock
...re else that you access this.counter). It prevents any other threads from em>x m>ecuting any other code which is guarded by locker.
Using locks also, prevents the multi-CPU reordering problems as above, which is great.
The problem is, locking is slow, and if you re-use the locker in some other place whic...
Adding a Method to an Em>x m>isting Object Instance
I've read that it is possible to add a method to an em>x m>isting object (i.e., not in the class definition) in Python.
16 Answ...