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How to set JAVA_HOME in Linux for all users
... don't forget to delete the double quotes and recreate them from your keyboard, because only copying and pasting may create troubles.
– Sunil Kumar
Jan 13 '15 at 15:43
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Common use-cases for pickle in Python
...n.
To emphasise @lunaryorn's comment - you should never unpickle a string from an untrusted source, since a carefully crafted pickle could execute arbitrary code on your system. For example see https://blog.nelhage.com/2011/03/exploiting-pickle/
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
I am trying to add an unique index that gets created from the foreign keys of four associated tables:
9 Answers
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How do I set the proxy to be used by the JVM
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From the Java documentation (not the javadoc API):
http://download.oracle.com/javase/6/docs/technotes/guides/net/proxies.html
Set the JVM flags http.proxyHost and http.proxyPort when starting your JVM on the command line.
T...
Overcoming “Display forbidden by X-Frame-Options”
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I had a similar issue, where I was trying to display content from our own site in an iframe (as a lightbox-style dialog with Colorbox), and where we had an server-wide "X-Frame-Options SAMEORIGIN" header on the source server preventing it from loading on our test server.
This doesn'...
Suppressing “is never used” and “is never assigned to” warnings in C#
...code. The first ("... is never used") is usually a code-smell of leftovers from earlier versions of the code. Perhaps code was deleted, but fields left behind.
The second is usually a code-smell for incorrectly used fields. For instance, you might incorrectly write the new value of a property back ...
Passing parameters to a Bash function
...ters in a Bash function, but what comes up is always how to pass parameter from the command line.
7 Answers
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C++ Redefinition Header Files (winsock2.h)
How do I prevent from including header files twice? The problem is I'm including the in MyClass.h and then I'm including MyClass.h in many files, so it includes multiple times and redefinition error occurs. How to prevent?
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Show which git tag you are on?
...solution...
This leverages the fact that git-log reports the log starting from what you've checked out. %h prints the abbreviated hash. Then git describe --exact-match --tags finds the tag (lightweight or annotated) that exactly matches that commit.
The $() syntax above assumes you're using bash o...
How do you merge two Git repositories?
...mit's title contains a reference to the old history tree:
Add 'rails/' from commit <rev>
Where <rev> is a SHA-1 commit hash. You can still see the history, blame some changes.
git log <rev>
git blame <rev> -- README.md
Note that you can't see the directory prefix fro...