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Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?

...th a condition like data[c] & 0x80 or so that can be true for positive and negative values?). I had compilers make invalid optimisations (for example, a couple of years ago, I had an ICC (11.0, iirc) use signed-32-bit-int-to-double conversion in 1.0/n where n was an unsigned int. Was about twice...
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Saving images in Python at a very high quality

... If you are using matplotlib and trying to get good figures in a latex document, save as an eps. Specifically, try something like this after running the commands to plot the image: plt.savefig('destination_path.eps', format='eps') I have found that ep...
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How to use a decimal range() step value?

Is there a way to step between 0 and 1 by 0.1? 33 Answers 33 ...
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Is memcached a dinosaur in comparison to Redis? [closed]

I have worked quite a bit with memcached the last weeks and just found out about Redis. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach: ...
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Android Studio Gradle Configuration with name 'default' not found

I am having problems compiling my app with Android Studio (0.1.5). The app uses 2 libraries which I have included as follows: ...
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Remove leading comma from a string

...tring(1) However, if you want to be able to detect if the comma is there and remove it if it is, then something like: if (str[0] == ',') { str = str.substring(1); } share | improve this answe...
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No @XmlRootElement generated by JAXB

...der to marshal/unmarshal a given object, specifically the XML element name and namespace. You can't just pass any old object to the Marshaller. @XmlRootElement provides this information. The annotation is just a convenience, however - JAXB does not require it. The alternative to is to use JAXBEleme...
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Reconnection of Client when server reboots in WebSocket

I am using web socket using PHP5 and the Chrome browser as client. I have taken the code from the site http://code.google.com/p/phpwebsocket/ . ...
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Using OpenGl with C#? [closed]

Is there free OpenGL support libraries for C#? If so, which one do I use and where do I find sample projects? 9 Answers ...
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How to remove the focus from a TextBox in WinForms?

...Also note that you cannot set it to the Form. Container controls like Form and Panel will pass the Focus on to their first child control. Which could be the TextBox you wanted it to move away from. share | ...