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How to get the original value of an attribute in Rails
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Before rails 5.1
Appending _was to your attribute will give you the previous value.
For rail...
Undo a Git merge that hasn't been pushed yet
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32 Answers
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How I can delete in VIM all text from current line to end of file?
...head hugefile > firstlines
(If you are on Windows you can use the Win32 port of head)
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What is the AppDelegate for and how do I know when to use it?
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256
I normally avoid the design approach implied by Andrew's use of the term "heart of your applic...
How to convert Linux cron jobs to “the Amazon way”?
...hole LAMP web application from dedicated machines to the cloud (Amazon EC2 machines). It's going great so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way".
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How to force a Solution file (SLN) to be opened in Visual Studio 2013?
Trying to open a VS 2012 solution (SLN file) explicitly in VS 2013 succeeds. Simply double-clicking it in Windows Explorer still opens it in VS 2012 instead.
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How can I modify the size of column in a MySQL table?
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How to remove space between axis & area-plot in ggplot2?
...vibisan's answer for further possibilities in the latest versions of ggplot2.
From ?scale_x_continuous about the expand-argument:
Vector of range expansion constants used to add some padding around
the data, to ensure that they are placed some distance away from the
axes. The defaults are...
CodeIgniter: Create new helper?
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edited Nov 25 '15 at 2:15
Nam G VU
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How can I view a git log of just one user's commits?
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This works for both git log and gitk - the 2 most common ways of viewing history.
You don't need to use the whole name:
git log --author="Jon"
will match a commit made by "Jonathan Smith"
git log --author=Jon
and
git log --author=Smith
would also work. The quotes a...