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Which is preferred: Nullable.HasValue or Nullable != null?
...lue because I liked the semantics. However, recently I was working on someone else's existing codebase where they used Nullable<> != null exclusively instead.
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Matplotlib discrete colorbar
...ternative you can make your own cmap from scratch, or read-out an existing one and override just some specific entries.
import numpy as np
import matplotlib as mpl
import matplotlib.pylab as plt
fig, ax = plt.subplots(1, 1, figsize=(6, 6)) # setup the plot
x = np.random.rand(20) # define the da...
Querying DynamoDB by date
...CreatedAt) using the greater-than symbol. As far as I know, this can't be done.
– Aziz Javed
Jun 4 '17 at 18:22
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How to create a new object instance from a Type
One may not always know the Type of an object at compile-time, but may need to create an instance of the Type .
12 Ans...
Retain precision with double in Java
...
As others have mentioned, you'll probably want to use the BigDecimal class, if you want to have an exact representation of 11.4.
Now, a little explanation into why this is happening:
The float and double primitive types in Java are floating po...
PHP Regex to check date is in YYYY-MM-DD format
...ch all valid dates. If you want it to only be valid when it contains just one date and nothing else, then wrap it in ^( )$ like so:
^(((((1[26]|2[048])00)|[12]\d([2468][048]|[13579][26]|0[48]))-((((0[13578]|1[02])-(0[1-9]|[12]\d|3[01]))|((0[469]|11)-(0[1-9]|[12]\d|30)))|(02-(0[1-9]|[12]\d))))|(...
How to detect my browser version and operating system using JavaScript?
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I'm sad to say: We are sh*t out of luck on this one.
I'd like to refer you to the author of WhichBrowser: Everybody lies.
Basically, no browser is being honest. No matter if you use Chrome or IE, they both will tell you that they are "Mozilla Netscape" with Gecko and Saf...
Getting key with maximum value in dictionary?
...to have another key-value pair 'd': 3000 that this method will only return one of the two even though they both have the maximum value.
>>> import operator
>>> stats = {'a':1000, 'b':3000, 'c': 100, 'd':3000}
>>> max(stats.iteritems(), key=operator.itemgetter(1))[0]
'b' ...
What exactly are unmanaged resources?
I want to know about unmanaged resources.
Can anyone please give me a basic idea?
7 Answers
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Recursive sub folder search and return files in a list python
...anslate John La Rooy's list comprehension to nested for's, just in case anyone else has trouble understanding it.
result = [y for x in os.walk(PATH) for y in glob(os.path.join(x[0], '*.txt'))]
Should be equivalent to:
import glob
result = []
for x in os.walk(PATH):
for y in glob.glob(os.pa...