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HTML5 Canvas Resize (Downscale) Image High Quality?

I use html5 canvas elements to resize images im my browser. It turns out that the quality is very low. I found this: Disable Interpolation when Scaling a <canvas> but it does not help to increase the quality. ...
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How to trigger XDebug profiler for a command line PHP script?

XDebug offers the configuration directive "xdebug.profiler_enable_trigger" that allows to activate profiling by passing the GET or POST parameter "XDEBUG_PROFILE" when calling a script via HTTP. This is handy if you don't want profiling for ALL of your scripts but only for a few special cases withou...
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How can I know which radio button is selected via jQuery?

I have two radio buttons and want to post the value of the selected one. How can I get the value with jQuery? 37 Answers ...
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Use of “instanceof” in Java [duplicate]

I learned that Java has the instanceof operator. Can you elaborate where it is used and what are its advantages? 4 Answer...
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LINQ Aggregate algorithm explained

This might sound lame, but I have not been able to find a really good explanation of Aggregate . 12 Answers ...
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Best way to create custom config options for my Rails app?

I need to create one config option for my Rails application. It can be the same for all environments. I found that if I set it in environment.rb , it's available in my views, which is exactly what I want... ...
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Increment value in mysql update query

I have made this code for giving out +1 point, but it doesn't work properly. 9 Answers ...
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Does C have a “foreach” loop construct?

Almost all languages have a foreach loop or something similar. Does C have one? Can you post some example code? 12 Answer...
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How do I find the caller of a method using stacktrace or reflection?

I need to find the caller of a method. Is it possible using stacktrace or reflection? 12 Answers ...
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Android - Start service on boot

From everything I've seen on Stack Exchange and elsewhere, I have everything set up correctly to start an IntentService when Android OS boots. Unfortunately it is not starting on boot, and I'm not getting any errors. Maybe the experts can help... ...