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How to validate IP address in Python? [duplicate]
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answered Nov 25 '08 at 23:50
DustinDustin
78.2k1717 gold badges103103 silver badges131131 bronze badges
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How to round an average to 2 decimal places in PostgreSQL?
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283
PostgreSQL does not define round(double precision, integer). For reasons @Mike Sherrill 'Cat Rec...
Build vs new in Rails 3
In the Rails 3 docs , the build method for associations is described as being the same as the new method, but with the automatic assignment of the foreign key. Straight from the docs:
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Replace values in list using Python [duplicate]
...n-place if you want, but it doesn't actually save time:
items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for index, item in enumerate(items):
if not (item % 2):
items[index] = None
Here are (Python 3.6.3) timings demonstrating the non-timesave:
In [1]: %%timeit
...: items = [0, 1, 2, 3,...
Why don't structs support inheritance?
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edited Oct 9 '15 at 11:53
nevermind
1,6701515 silver badges2323 bronze badges
answered Aug 3 '09 at 16...
How to get a specific output iterating a hash in Ruby?
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328
hash.each do |key, array|
puts "#{key}-----"
puts array
end
Regarding order I should add...
C++: How to round a double to an int? [duplicate]
...le (call it x), meant to be 55 but in actuality stored as 54.999999999999943157 which I just realised.
5 Answers
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Modulo operation with negative numbers
... sense, logically. Right?
Let's see what this leads to:
Example A. 5/(-3) is -1
=> (-1) * (-3) + 5%(-3) = 5
This can only happen if 5%(-3) is 2.
Example B. (-5)/3 is -1
=> (-1) * 3 + (-5)%3 = -5
This can only happen if (-5)%3 is -2
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