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What is the Python equivalent of Matlab's tic and toc functions?
...e question when I migrated to python from Matlab. With the help of this thread I was able to construct an exact analog of the Matlab tic() and toc() functions. Simply insert the following code at the top of your script.
import time
def TicTocGenerator():
# Generator that returns time differe...
Simple way to transpose columns and rows in SQL?
...he XML has a second scan of dtTranspose table but this time from a logical read – data cache.
You can find some more about these solutions (including some actual T-SQL exmaples) in this article:
https://www.sqlshack.com/multiple-options-to-transposing-rows-into-columns/
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When to use nested classes and classes nested in modules?
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This post is highly misleading without reading the entire comment thread.
– Nathan
Aug 28 '15 at 20:59
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Calling C++ class methods via a function pointer
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Read this for detail :
// 1 define a function pointer and initialize to NULL
int (TMyClass::*pt2ConstMember)(float, char, char) const = NULL;
// C++
class TMyClass
{
public:
int DoIt(float a, char b, char c){ cout <...
Is duplicated code more tolerable in unit tests?
...ch test was no longer clear. It seems there is a trade-off between tests' readability and maintainability. If I leave duplicated code in unit tests, they're more readable, but then if I change the SUT , I'll have to track down and change each copy of the duplicated code.
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AngularJS Directive Restrict A vs E
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I've read up and down those docs but missed this one :) thanks.
– Darren Wainwright
Apr 22 '14 at 14:09
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...ssues, but it's a lot of work, and the above UIImageView categories have already done this for you.
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surface plots in matplotlib
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You can read data direct from some file and plot
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
from matplotlib import cm
import numpy as np
from sys import argv
x,y,z = np.loadtxt('your_file', unpack=True)...
String concatenation: concat() vs “+” operator
... Things have changed since when this answer was created. Please read my answer bellow.
– Paweł Adamski
Oct 6 '17 at 13:25
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How do I catch a numpy warning like it's an exception (not just for testing)?
...ng was raised as an exception!'
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Warning was raised as an exception!
Read carefully the documentation for filterwarnings since it allows you to filter only the warning you want and has other options. I'd also consider looking at catch_warnings which is a context manager which automatically res...