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Convert a date format in PHP
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Use strtotime() and date():
$originalDate = "2010-03-21";
$newDate = date("d-m-Y", strtotime($originalDate));
(See the strtotime and date documentation on the PHP site.)
Note that this was a quick solution to the original question. For more extensive conversions, you...
Delete all rows in an HTML table
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QuentinQuentin
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How to implement a Map with multiple keys? [duplicate]
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27 Answers
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How do I test for an empty JavaScript object?
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How to find first element of array matching a boolean condition in JavaScript?
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12 Answers
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How to check if an object is nullable?
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There are two types of nullable - Nullable<T> and reference-type.
Jon has corrected me ...
Django class-based view: How do I pass additional parameters to the as_view method?
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answered Jul 15 '12 at 18:54
Daniel ErikssonDaniel Eriksson
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How do I compute derivative using Numpy?
...d choice.
Here is an example using SymPy
In [1]: from sympy import *
In [2]: import numpy as np
In [3]: x = Symbol('x')
In [4]: y = x**2 + 1
In [5]: yprime = y.diff(x)
In [6]: yprime
Out[6]: 2⋅x
In [7]: f = lambdify(x, yprime, 'numpy')
In [8]: f(np.ones(5))
Out[8]: [ 2. 2. 2. 2. 2.]
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Batch file: Find if substring is in string (not in a file)
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296
Yes, you can use substitutions and check against the original string:
if not x%str1:bcd=%==x%...
Why does changing 0.1f to 0 slow down performance by 10x?
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Welcome to the world of denormalized floating-point! They can wreak havoc on performance!!!
De...