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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...comments:
printf '' | git hash-object --stdin -t tree
Or, as seen here, from Colin Schimmelfing:
git hash-object -t tree --stdin < /dev/null
So I guess it is safer to define a variable with the result of that command as your empty sha1 tree (instead of relying of a "well known value").
Not...
How to load local html file into UIWebView
...tml has the tag <img src="some.png">, the webView will load some.png from your project.
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JFrame in full screen Java
...("My FullscreenJFrame");
setContentPane(contentPane);
// From Here starts the trick
FullScreenEffect effect = new FullScreenEffect();
fullscreenButton.addActionListener(effect);
contentPane.add(fullscreenButton);
fullscreenButton.setVisible(true);
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C++ equivalent of java's instanceof
...re checking for), and pass in the object you want to test as the argument (from which template type K would be inferred).
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“loop:” in Java code. What is this, and why does it compile?
...om/myfile.mp3
downLoad(url);
Would you all know what this code is (apart from awful)?
Solution: two labels, url and http, a comment www.myserver.com/myfile.mp3 and a method call with a parameter that has the same name (url) as the label. Yup, this compiles (if you define the method call and the l...
What is the difference among col-lg-*, col-md-* and col-sm-* in Bootstrap?
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From Twitter Bootstrap documentation:
small grid (≥ 768px) = .col-sm-*,
medium grid (≥ 992px) = .col-md-*,
large grid (≥ 1200px) = .col-lg-*.
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Unicode characters in URLs
... Re: IE not always displaying pretty IRIs - they are protecting users from homograph-based phishing attacks. Check out w3.org/International/articles/idn-and-iri (specifically the section 'Domain names-and phishing') and blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx
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Which kind of pointer do I use when?
...the object is owned.
Note that ownership in a software system is separate from ownership as we would think of it outside of software. For example, a person might "own" their home, but that doesn't necessarily mean that a Person object has control over the lifetime of a House object. Conflating thes...
Difference between session affinity and sticky session?
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Sticky session means that when a request comes into a site from a client all further requests go to the same server initial client request accessed. I believe that session affinity is a synonym for sticky session.
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res.sendFile absolute path
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The express.static middleware is separate from res.sendFile, so initializing it with an absolute path to your public directory won't do anything to res.sendFile. You need to use an absolute path directly with res.sendFile. There are two simple ways to do it:
res.s...