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I forgot the password I entered during postgres installation
...init.d/postgresql restart
Further Reading about that pg_hba file: http://www.postgresql.org/docs/9.1/static/auth-pg-hba-conf.html
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How to use Git and Dropbox together effectively?
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The right way to do this is use git-remote-dropbox: https://github.com/anishathalye/git-remote-dropbox
Creating your own bare repo in Dropbox causes a lot of problems. Anish (the creator of the library) explains it best:
The root cause of these problems is that the Dropbo...
What is the good python3 equivalent for auto tuple unpacking in lambda?
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According to http://www.python.org/dev/peps/pep-3113/ tuple unpacking are gone, and 2to3 will translate them like so:
As tuple parameters are used by lambdas because of the single
expression limitation, they must also be supported. This is...
scp or sftp copy multiple files with single command
...r.txt \
your_username@remote2.edu:/some/remote/directory/
Source: http://www.hypexr.org/linux_scp_help.php
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Java generics type erasure: when and what happens?
...o retrieve this information.
I've written an article about this subject:
https://rgomes.info/using-typetokens-to-retrieve-generic-parameters/
A note about the technique described in the article above is that the technique is obscure for majority of developers. Despite it works and works well, mos...
What is a 'Closure'?
...un. They are not needed to close it.
More on the theory behind that here:
https://stackoverflow.com/a/36878651/434562
It's worth to note that in the example above, the wrapper function returns its inner function as a value. The moment we call this function can be remote in time from the moment the...
Truncating all tables in a Postgres database
...rn? You would probably have to write a PL/pgSQL script to do this.
http://www.postgresql.org/docs/8.3/static/plpgsql-statements.html (section 38.5.4. Executing Dynamic Commands)
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How can I measure the similarity between two images? [closed]
...ame differences.
Look at this open source image search application http://www.semanticmetadata.net/lire/. It describes several image similarity algorighms, three of which are from the MPEG-7 standard: ScalableColor, ColorLayout, EdgeHistogram and Auto Color Correlogram.
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“No X11 DISPLAY variable” - what does it mean?
...project/downloading.php?
Install, then use settings on this link:
http://www.geo.mtu.edu/geoschem/docs/putty_install.html or follow this steps:
Installing/Configuring PuTTy and Xming
Once PuTTy and Xming have been downloaded to the PC, install according to their respective instructions.
Configu...
How do I remove version tracking from a project cloned from git?
... shell, but the shell can not recognize the parameter -rf of Remove-Item.
www.montanaflynn.me introduces the following shell command to remove all .git files one time, recursively! It's really working!
find . | grep "\.git/" | xargs rm -rf
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