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How to calculate time in hours between two dates in iOS
...enDates = [date1 timeIntervalSinceDate:date2];
double secondsInAnHour = 3600;
NSInteger hoursBetweenDates = distanceBetweenDates / secondsInAnHour;
See, the apple reference library http://developer.apple.com/library/mac/navigation/
or if you are using Xcode just select help/documentation from th...
NUnit isn't running Visual Studio 2010 code
I'm trying to load a Visual Studio 2010 beta dll into the NUnit GUI. I get a popup error.
10 Answers
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How to check the version before installing a package using apt-get?
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Convert number strings with commas in pandas DataFrame to float
...e step.
You need to set the locale first:
In [ 9]: import locale
In [10]: from locale import atof
In [11]: locale.setlocale(locale.LC_NUMERIC, '')
Out[11]: 'en_GB.UTF-8'
In [12]: df.applymap(atof)
Out[12]:
0 1
0 1200 4200.00
1 7000 -0.03
2 5 0.00
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What is the optimal Jewish toenail cutting algorithm?
...e. Luckily, humans only have five toes per foot*, so there are only 5! = 120 unrestricted sequences.
Python example:
#seq is only valid when consecutive elements in the list differ by at least two.
def isValid(seq):
for i in range(len(seq)-1):
a = seq[i]
b = seq[i+1]
i...
How to flatten only some dimensions of a numpy array
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Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.shape
# (50, 100, 25)
>>> new_arr = arr.reshape(5000,25)
>>> new_arr.shape
# (5000, 25)
# One shape dimension can be -1.
# In this case, the value is inferred from
# the le...
jQuery equivalent of getting the context of a Canvas
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Try:
$("#canvas")[0].getContext('2d');
jQuery exposes the actual DOM element in numeric indexes, where you can perform normal JavaScript/DOM functions.
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In Jinja2, how do you test if a variable is undefined?
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edited Jul 29 '14 at 0:16
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How do I build a numpy array from a generator?
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Numpy arrays require their length to be set explicitly at creation time, unlike python lists. Th...