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Run/install/debug Android applications over Wi-Fi?

... which will put the server on your phone back to the USB mode. If you have more than one device, you can specify the device with the -s option: adb -s <DEVICE_IP_ADDRESS>:5555 usb. No root required! To find the IP address of the device: run adb shell and then netcfg. You'll see it there. To ...
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How slow are .NET exceptions?

... I'm on the "not slow" side - or more precisely "not slow enough to make it worth avoiding them in normal use". I've written two short articles about this. There are criticisms of the benchmark aspect, which are mostly down to "in real life there'd be more s...
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Get child node index

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How to specify different Debug/Release output directories in QMake .pro file

...onfiguration. If you wish to create these folders and perform the two (or more) builds in them, you'll need a top-level makefile, possibly created from a top-level project file via qmake. It's not uncommon to have more than two build configurations, so you're unnecessarily committing yourself to o...
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What is a NullPointerException, and how do I fix it?

...ode is to use @Nullable and @NotNull annotations. The following answer has more information on this. Although this answer is specificially about the IntelliJ IDE, it is also applicable to other tools as is apparanet from teh comments. (BTW I am not allowed to edit this answer directly, perhaps the a...
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Is it better practice to use String.format over string Concatenation in Java?

...ice to use String.format(). The main reason is that String.format() can be more easily localised with text loaded from resource files whereas concatenation can't be localised without producing a new executable with different code for each language. If you plan on your app being localisable you shou...
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What strategies and tools are useful for finding memory leaks in .NET?

... think all of the other answers are very useful. By the way, this tool is more commonly called SciTech's Mem Profiler! – Scott Langham Oct 9 '08 at 12:44 add a comment ...
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Viewing all defined variables [duplicate]

... In [1]: foo = 'bar' In [2]: %who foo You can use the whos magic to get more detail: In [3]: %whos Variable Type Data/Info ---------------------------- foo str bar There are a wealth of other magics available. IPython is basically the Python interpreter on steroids. One conveni...
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How to determine the memory footprint (size) of a variable?

...ontrol and the logs can be written both on mongo or in the filesystem. For more details see here. Blackfire Blackfire is a PHP profiler by SensioLabs, the Symfony2 guys https://blackfire.io/ If you use puphpet to set up your virtual machine you'll be happy to know it's supported ;-) Xdebug and traci...
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How do I write a correct micro-benchmark in Java?

... is available. Rule 8: Use a library for your benchmark as it is probably more efficient and was already debugged for this sole purpose. Such as JMH, Caliper or Bill and Paul's Excellent UCSD Benchmarks for Java. share ...