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Rails Observer Alternatives for 4.0
...e extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they were beneficial.
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How to update a plot in matplotlib?
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line1, = ax.plot(x, y, 'r-') # Returns a tuple of line objects, thus the comma
for phase in np.linspace(0, 10*np.pi, 500):
line1.set_ydata(np.sin(x + phase))
fig.canvas.draw()
fig.canvas.flush_events()
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What is the difference between 'my' and 'our' in Perl?
...les in order to use them under use strict without getting typo warnings or compile-time errors. Since Perl 5.6, it has replaced the obsolete use vars, which was only file-scoped, and not lexically scoped as is our.
For example, the formal, qualified name for variable $x inside package main is $main...
When should I use Debug.Assert()?
...nd the stack as if you had put a breakpoint there.
PS: If you liked Code Complete, I recommend following it up with this book. I bought it to learn about using WinDBG and dump files, but the first half is packed with tips to help avoid bugs in the first place.
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jQuery $(document).ready and UpdatePanels?
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An UpdatePanel completely replaces the contents of the update panel on an update. This means that those events you subscribed to are no longer subscribed because there are new elements in that update panel.
What I've done to work around th...
How to prune local tracking branches that do not exist on remote anymore
... branch name. Finally passing all the branch names into the delete branch command.
Since it is using the -d option, it will not delete branches that have not been merged into the branch that you are on when you run this command.
Also remember that you'll need to run git fetch --prune first, otherwi...
How do I set the table cell widths to minimum except last column?
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Get the closest number out of an array
...reducer.bind(null, goal)); ---------- I don't know how to put code in the comments hahaha.
– Mauricio Soares
Jan 22 '16 at 18:12
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Using an HTML button to call a JavaScript function
... you will still have the task of fixing the script after this so I would recommend getting it working in at least IE first as any mistakes you make changing the code to work cross browser could cause even more confusion. Once it's working in IE it will be easier to tell if it's working in other bro...
Code Golf: Collatz Conjecture
Inspired by http://xkcd.com/710/ here is a code golf for it.
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