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How to calculate time in hours between two dates in iOS
...weenDates = [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 ...
`if __name__ == '__main__'` equivalent in Ruby
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3 Answers
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How to read a (static) file from inside a Python package?
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-13
[added 2016-06-15: apparently this doesn't work in all situations. please refer to the other ans...
What's a correct and good way to implement __hash__()?
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Mark Amery
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answered May 25 '10 at 22:59
John MillikinJohn Millikin
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Python dictionary: Get list of values for list of keys
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213
A list comprehension seems to be a good way to do this:
>>> [mydict[x] for x in mykeys...
Declare a constant array
...it constant.
The nearest you can get is:
var letter_goodness = [...]float32 {.0817, .0149, .0278, .0425, .1270, .0223, .0202, .0609, .0697, .0015, .0077, .0402, .0241, .0675, .0751, .0193, .0009, .0599, .0633, .0906, .0276, .0098, .0236, .0015, .0197, .0007 }
Note the [...] instead of []: it ens...
Are nested try/except blocks in python a good programming practice?
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edited Jun 9 '13 at 23:52
answered Jun 9 '13 at 23:46
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Is it possible to implement a Python for range loop without an iterator variable?
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113
Off the top of my head, no.
I think the best you could do is something like this:
def loop(f,n...
Why do we use __init__ in Python classes?
...egs = legs
self.colour = colour
fido = Dog(4, "brown")
spot = Dog(3, "mostly yellow")
You're saying, Fido is a brown dog with 4 legs while Spot is a bit of a cripple and is mostly yellow. The __init__ function is called a constructor, or initializer, and is automatically called when you c...
MySQL Creating tables with Foreign Keys giving errno: 150
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239
I had the same problem with ALTER TABLE ADD FOREIGN KEY.
After an hour, I found that these con...