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Sockets: Discover port availability using Java

How do I programmatically determine the availability of a port in a given machine using Java? 10 Answers ...
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What is the difference between Class.getResource() and ClassLoader.getResource()?

...esource paths are always deemed to be absolute. So the following are basically equivalent: foo.bar.Baz.class.getResource("xyz.txt"); foo.bar.Baz.class.getClassLoader().getResource("foo/bar/xyz.txt"); And so are these (but they're different from the above): foo.bar.Baz.class.getResource("/data/x...
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Get property value from string using reflection

...fferentiate between a null value of an existing property or no property at all? I'd much rather know immediately that I was sending in a bad property name. This is not production code, but a better improvement would be to throw a more specific exception (e.g. check for null on GetProperty and throw ...
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Does have to be in the of an HTML document?

...displayed, making them shift on size/shape/font and/or flicker. It is generally a sign of bad craftsmanship. Generally you can get away with putting style anywhere you want, but try to avoid it whenever it is possible. HTML 5 introduced a scoped attribute that allowed style tags to be included ever...
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What is the proper way to format a multi-line dict in Python?

... First of all, like Steven Rumbalski said, "PEP8 doesn't address this question", so it is a matter of personal preference. I would use a similar but not identical format as your format 3. Here is mine, and why. my_dictionary = { # Do...
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Fastest way to find second (third…) highest/lowest value in vector or column

R offers max and min, but I do not see a really fast way to find another value in the order, apart from sorting the whole vector and then picking a value x from this vector. ...
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Generating CSV file for Excel, how to have a newline inside a value

...ixed the leading spaces issue in the question, I typed the CSV example manually and didn't copy-paste from a real file, the real file doesn't include those spaces, good catch. – Nir Aug 10 '09 at 7:41 ...
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object==null or null==object?

... { The convention of putting the constant on the left side of == isn't really useful in Java since Java requires that the expression in an if evaluate to a boolean value, so unless the constant is a boolean, you'd get a compilation error either way you put the arguments. (and if it is a boolean, y...
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Xcode + remove all breakpoints

Is there any way to remove all the breakpoints in Xcode? 12 Answers 12 ...
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erb, haml or slim: which one do you suggest? And why? [closed]

... A lot cleaner! As for the difference between HAML and SLIM - I never really worked with SLIM but I guess it is a matter of taste - take a look at both syntaxes and decide which looks better in you eyes. I don't think there is a definite winner between those two (HAML/SLIM). ...