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Find Java classes implementing an interface [duplicate]

...functionality to locate the classes that implemented a given interface. I know the functions were hidden in some non-logical place, but they could be used for other classes as the package name implied. Back then I did not need it, so I forgot about it, but now I do, and I can't seem to find the func...
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?

...think of is nested if's: if (cond1) if (cond2) doSomething(); Now, assume you now want to doSomethingElse() when cond1 is not met (new feature). So: if (cond1) if (cond2) doSomething(); else doSomethingElse(); which is obviously wrong, since the else associates with the ...
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Two versions of python on linux. how to make 2.7 the default

..., or put it in your ~/.bashrc if you want the change to be persistent, and now when you type python it runs your chosen 2.7, but when some program on your system tries to run a script with /usr/bin/env python it runs the standard 2.6. Alternatively, just create a virtual environment out of your 2...
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How to install PyQt4 on Windows using pip?

... "AMD64". To make it short: AMD's version was better and Intel adopted it, now calling it Intel64 for their CPUs - both are pretty much compatible (very minor differences). So pretty much every 64bit x86-64 CPU out there (except Itaniums) uses AMD64. – user136036 ...
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What is the motivation for bringing Symbols to ES6?

As you may know they are planning to include new Symbol primitive type in ECMAScript 6 (not to mention some other crazy stuff). I always thought that the :symbol notion in Ruby is needless; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate thi...
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How to make node.js require absolute? (instead of relative)

...th the node_modules/* trick, and then you can add your exceptions. Now anywhere in your application you will be able to require('foo') or require('bar') without having a very large and fragile relative path. If you have a lot of modules and want to keep them more separate from the...
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Android: How to Programmatically set the size of a Layout

...arHeight + " contentViewTop = " + contentViewTop); // By now we got the height of titleBar & statusBar // Now lets get the screen size DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetric...
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Why is TypedReference behind the scenes? It's so fast and safe… almost magical!

...ng of a couple of places in my own code that I'm going to go look at right now, to see if I can optimize them using the techniques you pointed out. – P Daddy Jan 22 '11 at 16:15 1 ...
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Change IPython/Jupyter notebook working directory

...esn't work please try working from the earlier version. Very conveniently, now "Start in:" can be empty in my tests with 4.1.1 and later. Perhaps they read this entry on SO and liked it, so long upvotes, nobody needs this anymore :) ...
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accepting HTTPS connections with self-signed certificates

... Create the keystore Download the BouncyCastle Provider and store it to a known location. Also ensure that you can invoke the keytool command (usually located under the bin folder of your JRE installation). Now import the obtained certs (don’t import the endpoint cert) into a BouncyCastle formatte...