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How do I delete a fixed number of rows with sorting in PostgreSQL?
...'t change ctids, I don't think. Since that just compacts within each page, and the ctid is just the line number not a page offset. A VACUUM FULL or a CLUSTER operation would change the ctid, but those operations take an access exclusive lock on the table first.
– araqnid
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How to add to an existing hash in Ruby
...ash in Ruby, I'm in the process of working through Apress' Beginning Ruby and have just finished the hashes chapter.
7 Ans...
How to get a specific version of a file in Mercurial?
I am new to Mercurial. Just cannot find the right command. Tried update/checkout with no luck. I am using local repository. Thanks
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libxml install error using pip
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** make sure the development packages of libxml2 and libxslt are installed **
From the lxml documentation, assuming you are running a Debian-based distribution :
sudo apt-get install libxml2-dev libxslt-dev python-dev
For Debian based systems, it should be enough to in...
Add single element to array in numpy
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This command does not alter the a array. However, it returns a new modified array. So, if a modification is required then a = numpy.append(a,a[0]) must be used.
– Amjad
Oct 16 '17 at 15:24
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No module named _sqlite3
...sqlite-devel (or libsqlite3-dev on some Debian-based systems)
Re-configure and re-compiled Python with ./configure --enable-loadable-sqlite-extensions && make && sudo make install
Note
The sudo make install part will set that python version to be the system-wide standard, which ...
What could cause java.lang.reflect.InvocationTargetException?
Well, I've tried to understand and read what could cause it but I just can't get it:
13 Answers
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warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
Every time I run this command rails server :
12 Answers
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Packing NuGet projects compiled in release mode?
...modified in the project file directly (no VS GUI option). To avoid the command-line property tweak for all future nuget pack calls, edit the project file XML in your favorite text editor.
– patridge
Jun 30 '11 at 22:07
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Most Useful Attributes [closed]
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@Nickolay Kondratyev: I don't know all ins and outs, but you can take a look in following web service best practices which can take you to some conclusions: blogs.msdn.com/b/jaredpar/archive/2011/03/18/…
– Nikola Radosavljević
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