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How can I check for NaN values?
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1389
math.isnan(x)
Return True if x is a NaN (not a number), and False otherwise.
>>>...
python plot normal distribution
...math
mu = 0
variance = 1
sigma = math.sqrt(variance)
x = np.linspace(mu - 3*sigma, mu + 3*sigma, 100)
plt.plot(x, stats.norm.pdf(x, mu, sigma))
plt.show()
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Python list subtraction operation
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346
Use a list comprehension:
[item for item in x if item not in y]
If you want to use the - in...
How to validate an Email in PHP?
... Manual should suffice.
Update 1: As pointed out by @binaryLV:
PHP 5.3.3 and 5.2.14 had a bug related to
FILTER_VALIDATE_EMAIL, which resulted in segfault when validating
large values. Simple and safe workaround for this is using strlen()
before filter_var(). I'm not sure about 5.3.4 fin...
How to handle anchor hash linking in AngularJS
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377
You're looking for $anchorScroll().
Here's the (crappy) documentation.
And here's the source...
Rails 3.1 and Image Assets
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In 3.1 you just get rid of the 'images' part of the path. So an image that lives in /assets/images/example.png will actually be accessible in a get request at this url - /assets/example.png
Because the assets/images folder gets...
Remove all special characters, punctuation and spaces from string
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378
This can be done without regex:
>>> string = "Special $#! characters spaces 888323...
jQuery get value of select onChange
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edited Aug 4 '18 at 15:53
moffeltje
3,85044 gold badges2121 silver badges4545 bronze badges
answered J...
How can I initialize a String array with length 0 in Java?
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232
As others have said,
new String[0]
will indeed create an empty array. However, there's one n...
Any way to properly pretty-print ordered dictionaries?
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133
As a temporary workaround you can try dumping in JSON format.
You lose some type information, b...