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How to check if a float value is a whole number
...ke into account that in Python 2, 1/3 is 0 (floor division for integer operands!), and that floating point arithmetic can be imprecise (a float is an approximation using binary fractions, not a precise real number). But adjusting your loop a little this gives:
>>> for n in range(12000, -1,...
Is there a way to make R beep/play a sound at the end of a script?
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Simple and perfect, but useless if you've disabled PC speaker. Though I have no idea how does it run on Windows.
– aL3xa
Jul 29 '10 at 19:07
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What is the “double tilde” (~~) operator in JavaScript? [duplicate]
I'm seeing this in some code, and I have no idea what it does:
4 Answers
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How can I find my Apple Developer Team id and Team Agent Apple ID?
...g to transfer an app. I am having troubles finding my team agent apple id and my team id. I have found it before and I have searched for 30 min without any luck now that i need it.
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How to count the number of files in a directory using Python
...fficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
import os, os.path
# simple version for working with CWD
print len([name for name in os.listdir('.') if os.path.isfile(name)])
# path joining version for other pa...
How to subtract 30 days from the current datetime in mysql?
... * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-add
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Sort NSArray of date strings or objects
...[NSArray sortedArrayUsingSelector: or -[NSMutableArray sortUsingSelector:] and pass @selector(compare:) as the parameter. The -[NSDate compare:] method will order dates in ascending order for you. This is simpler than creating an NSSortDescriptor, and much simpler than writing your own comparison fu...
How to get current page URL in MVC 3
...Asp.Net will always add :81 to the Url incorrectly
– Andras Zoltan
Mar 14 '11 at 21:52
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filter for complete cases in data.frame using dplyr (case-wise deletion)
...works, of course. But that is a) verbose when there are a lot of variables and b) impossible when the variable names are not known (e.g. in a function that processes any data.frame).
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How to put spacing between TBODY elements
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@nh2: double-colons are for pseudo-content and single-colon is for pseudo-selectors. It's an update to the CSS syntax. Everything used to just use the single colon. Older browsers don't support double colon (like, IE <=8).
– dbmikus
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