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How to optimize for-comprehensions and loops in Scala?

...imizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catch is expensive. But since such nested returns are rare in Scala programs, the optimizer did not yet address this case. There is work going on to improve the optimizer which hopefully will solve this issue soon. ...
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Draw text in OpenGL ES

I'm currently developing a small OpenGL game for the Android platform and I wonder if there's an easy way to render text on top of the rendered frame (like a HUD with the player´s score etc). The text would need to use a custom font also. ...
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How to clear the canvas for redrawing

After experimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this? ...
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What are the advantages of using the C++ Boost libraries? [closed]

So, I've been reading through and it appears that the Boost libraries get used a lot in practice (not at my shop, though). Why is this? and what makes it so wonderful? ...
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What's so wrong about using GC.Collect()?

Although I do understand the serious implications of playing with this function (or at least that's what I think), I fail to see why it's becoming one of these things that respectable programmers wouldn't ever use, even those who don't even know what it is for. ...
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Beginner's guide to ElasticSearch [closed]

There hasn't been any books about ElasticSearch (that I know of), and http://www.elasticsearch.org/guide/ seems to contain only references. ...
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what is the basic difference between stack and queue?

What is the basic difference between stack and queue?? 11 Answers 11 ...
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Versioning SQL Server database

....html. I choose not to put schema dumps in under version control as alumb and others suggest because I want an easy way to upgrade my production database. For a web application where I'll have a single production database instance, I use two techniques: Database Upgrade Scripts A sequence databa...
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Easy way to dismiss keyboard?

...ve quite a few controls scattered throughout many table cells in my table, and I was wondering if there's an easier way to dismiss the keyboard without having to loop through all my controls and resigning them all as the first responder. I guess the question is.. How would I get the current first re...
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How to detect when cancel is clicked on file input?

... While not a direct solution, and also bad in that it only (as far as I've tested) works with onfocus (requiring a pretty limiting event blocking) you can achieve it with the following: document.body.onfocus = function(){ /*rock it*/ } What's nice abou...