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Numbering rows within groups in a data frame

... answered Oct 16 '12 at 23:41 mnelmnel 103k2424 gold badges240240 silver badges239239 bronze badges ...
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ADT requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found

... I've just encountered exactly the same problem in Eclipse 3.6 (Helios). After plenty of Googling I came across this link: http://code.google.com/intl/es/eclipse/docs/faq.html#wstinstallerror During installation, there's an error about requiring org.eclipse.wst.sse.ui. How d...
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Why isn't String.Empty a constant?

... | edited Feb 3 '09 at 17:31 answered Feb 3 '09 at 17:24 ...
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The modulo operation on negative numbers in Python

... 134 Unlike C or C++, Python's modulo operator (%) always return a number having the same sign as th...
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Python String and Integer concatenation [duplicate]

...kticks) is deprecated in later versions of Python 2, and removed in Python 3. Use the str() function instead. You can use : string = 'string' for i in range(11): string +=`i` print string It will print string012345678910. To get string0, string1 ..... string10 you can use this as @YOU suggeste...
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Is there a 'foreach' function in Python 3?

... user 451 35255 silver badges88 bronze badges answered Aug 18 '13 at 0:33 Jo Are ByJo Are By ...
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Small Haskell program compiled with GHC into huge binary

... Let's see what's going on, try $ du -hs A 13M A $ file A A: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.27, not stripped $ ldd A linux-vdso.so.1 => (0x00007fff1b9ff000) libXr...
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Is there a common Java utility to break a list into batches?

...e, partitioning a list containing [a, b, c, d, e] with a partition size of 3 yields [[a, b, c], [d, e]] -- an outer list containing two inner lists of three and two elements, all in the original order. share | ...
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Right to Left support for Twitter Bootstrap 3

... answered Nov 1 '13 at 16:11 Muhammad RedaMuhammad Reda 23.4k1212 gold badges8383 silver badges9999 bronze badges ...
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How to check if type of a variable is string?

...d to test whether an object is an instance of str or unicode. In Python 3.x, the correct test is isinstance(s, str) The bytes class isn't considered a string type in Python 3. share | improve ...