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How to delete duplicate lines in a file without sorting it in Unix?
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From http://sed.sourceforge.net/sed1line.txt:
(Please don't ask me how this works ;-) )
# delete duplicate, consecutive lines from a file (emulates "uniq").
# First line in a set of duplicate lines is kept, rest are deleted.
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How to add footnotes to GitHub-flavoured Markdown?
...nce of the numbered marker and followed by a colon and the link, I.E. [1]: http://www.example.com/link1
And once you preview it, it will be rendered as numbered links in the body of the post.
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Cookie overflow in rails application?
...re a model object in the session.
Check out this railscast on this topic:
http://railscasts.com/episodes/13-dangers-of-model-in-session?autoplay=true
It's a better practice to store the id (user's id in this case) inside the session.
Then you won't have this problem.
(See Frederick Cheung comment...
pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
... support python-3. The package is available in the PyPI [2].
Cheers
[1] https://pypi.python.org/pypi/pydot2/1.0.32
[2] https://pypi.python.org/pypi/pydot2
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Images can't contain alpha channels or transparencies
...cy) of multiple .png files within seconds.
You can download from here http://alphachannelremover.blogspot.com
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Histogram Matplotlib
So I have a little problem. I have a data set in scipy that is already in the histogram format, so I have the center of the bins and the number of events per bin. How can I now plot is as a histogram. I tried just doing
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How do I get Month and Date of JavaScript in 2 digit format?
When we call getMonth() and getDate() on date object, we will get the single digit number .
For example :
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What is the difference between char s[] and char *s?
In C, one can use a string literal in a declaration like this:
13 Answers
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Unix's 'ls' sort by name
Can you sort an ls listing by name?
11 Answers
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Warning :-Presenting view controllers on detached view controllers is discouraged
In my app, I am using a navigation controller. Later on in some view I am using presentViewController for showing a zoomed image.
Also I am not using a Storyboard or nib.
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