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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...o get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated in the original problem.
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It has a DefiningQuery but no InsertFunction element… err
This thing is driving me crazy, and the error is quite meaningless to me:
6 Answers
6
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How do you sort an array on multiple columns?
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edited Jan 23 '15 at 12:32
answered May 6 '10 at 20:31
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Solving “Who owns the Zebra” programmatically?
Edit: this puzzle is also known as "Einstein's Riddle"
14 Answers
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How to count TRUE values in a logical vector
...icient (look at the code of table function).
Also, you should be careful with the "table" solution, in case there are no TRUE values in the logical vector. Suppose z <- c(NA, FALSE, NA) or simply z <- c(FALSE, FALSE), then table(z)["TRUE"] gives you NA for both cases.
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Is it possible to use 'else' in a list comprehension? [duplicate]
...if b else c is a ternary operator in Python that evaluates to a if the condition b is true - otherwise, it evaluates to c. It can be used in comprehension statements:
>>> [a if a else 2 for a in [0,1,0,3]]
[2, 1, 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_...
Should I impose a maximum length on passwords?
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edited Feb 8 '17 at 14:08
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answered Sep 19 '08 at 1...
How to fix java.net.SocketException: Broken pipe?
...mmons http client to call url using post method to post the parameters and it is throwing the below error rarely.
10 Answe...
In Ruby on Rails, how do I format a date with the “th” suffix, as in, “Sun Oct 5th”?
...display dates in the format: short day of week, short month, day of month without leading zero but including "th", "st", "nd", or "rd" suffix.
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How to create PDFs in an Android app? [closed]
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If anyone wants to generate PDFs on Android device, here is how to do it:
http://sourceforge.net/projects/itext/ (library)
http://www.vogella.de/articles/JavaPDF/article.html (tutorial)
http://tutorials.jenkov.com/java-itext/image.html (images tutorial)
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