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Explicitly calling return in a function or not
...Simon Urbanek from the R core team (I believe) for recommending a user to explicitly calling return at the end of a function (his comment was deleted though):
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String comparison in Python: is vs. == [duplicate]
...lt-in Python objects (like
strings, lists, dicts, functions,
etc.), if x is y, then x==y is also
True.
Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can have the same value.
Also, is it generally c...
How do you sort a dictionary by value?
...ten have to sort a dictionary, consisting of keys & values, by value. For example, I have a hash of words and respective frequencies, that I want to order by frequency.
...
Difference between map, applymap and apply methods in Pandas
Can you tell me when to use these vectorization methods with basic examples?
10 Answers
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pyplot scatter plot marker size
...it increases it by a factor of 4). To see this consider the following two examples and the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickl...
Cast to int vs floor
...) = -5
(int)(-4.5) = -4
This being said, there is also a difference in execution time. On my system, I've timed that casting is at least 3 times faster than floor.
I have code that needs the floor operation of a limited range of values, including negative numbers. And it needs to be very effici...
Get number of digits with JavaScript
...post suggests, I would like to know how many digits var number has. For example: If number = 15; my function should return 2 . Currently, it looks like this:
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How to store date/time and timestamps in UTC time zone with JPA and Hibernate
...ored or has no effect when used with PostgreSQL
– Alex R
Apr 29 '19 at 0:26
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show 4 more comments
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How to check if a variable is an integer in JavaScript?
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