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How do I determine if my python shell is executing in 32bit or 64bit?
I need a way to tell what mode the shell is in from within the shell.
18 Answers
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
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Suppose I have the following table T:
a b
--------
1 abc
1 def
1 ghi
2 jkl
2 mno
2 pqr
And I do the following query:
SELECT a, b
FROM T
GROUP BY a
The output should have two rows, one row where a=1 and a second row where a=2.
But...
Why are Oracle table/column/index names limited to 30 characters?
I can understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
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Are tuples more efficient than lists in Python?
...there any performance difference between tuples and lists when it comes to instantiation and retrieval of elements?
8 Answ...
Replacement for “rename” in dplyr
I like plyr's renaming function rename . I have recently started using dplyr, and was wondering if there is an easy way to rename variables using a function from dplyr, that is as easy to use as to plyr's rename ?
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How can I see the size of files and directories in linux? [closed]
How can I see the size of files and directories in Linux? If use df -m , then it shows the size of all the directory at the top level, but, for the directories and files inside the directory, how do I check the size?
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Redirect stderr and stdout in Bash
I want to redirect both stdout and stderr of a process to a single file. How do I do that in Bash?
15 Answers
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Get name of currently executing test in JUnit 4
In JUnit 3, I could get the name of the currently running test like this:
14 Answers
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Python in Xcode 4+?
How does one create a Python friendly environment in Xcode 4, 5, 6 or 7?
8 Answers
8
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How can I remove a specific item from an array?
I have an array of numbers and I'm using the .push() method to add elements to it.
97 Answers
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