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How to check if a process id (PID) exists
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To check for the existence of a process, use
kill -0 $pid
But just as @unwind said, if you're going to kill it anyway, just
kill $pid
or you will have a race condition.
If you want to ignore the text output of kill and do someth...
How to revert Master branch to upstream
I have forked a git repository and setup upstream. I've made some changes in Master branch and committed and pushed to github.
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Converting Python dict to kwargs?
I want to build a query for sunburnt(solr interface) using class inheritance and therefore adding key - value pairs together. The sunburnt interface takes keyword arguments. How can I transform a dict ({'type':'Event'}) into keyword arguments (type='Event') ?
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Fixing the order of facets in ggplot
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Make your size a factor in your dataframe by:
temp$size_f = factor(temp$size, levels=c('50%','100%','150%','200%'))
Then change the facet_grid(.~size) to facet_grid(.~size_f)
Then plot:
The graphs are now in the correct order.
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Define make variable at rule execution time
In my GNUmakefile, I would like to have a rule that uses a temporary directory. For example:
4 Answers
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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
I am working with the pandas library and I want to add two new columns to a dataframe df with n columns (n > 0).
These new columns result from the application of a function to one of the columns in the dataframe.
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Use different Python version with virtualenv
...ing with python 2.5.4. I got virtualenv properly installed, everything is working fine. Is there a possibility that I can use a virtualenv with a different version of Python?
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Git : List all unmerged changes in git
Creating a branch for various topics, and not regularly deleting them when I don't need them any more, I have now ended up with about 50 branches ;)
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getApplicationContext(), getBaseContext(), getApplication(), getParent()
...the same object, there is no guarantee that this will always be the case (for example, in a specific vendor implementation).
So if you want the Application class you registered in the Manifest, you should never call getApplicationContext() and cast it to your application, because it may not be the a...
A potentially dangerous Request.Form value was detected from the client
Every time a user posts something containing < or > in a page in my web application, I get this exception thrown.
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