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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?

...thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will eliminate the lib...
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How to know/change current directory in Python shell?

...n shell, how can I know what the current directory is and how can I change it to another directory where my modules are? 7 ...
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GitHub pages are not updating

I'm running into a weird issue with GitHub pages. I pushed a new commit to my personal pages page maltzj.github.io , but the new article isn't showing up there. When I execute the server locally, a post lives at localhost:4000/posts/the-price-of-inconsistent-code/ . However, when I go to http://m...
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jQuery selector regular expressions

...using wildcard or regular expressions (not sure on the exact terminology) with a jQuery selector. 10 Answers ...
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Using Python String Formatting with Lists

...of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list has three entries. ...
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Capture Image from Camera and Display in Activity

I want to write a module where on a click of a button the camera opens and I can click and capture an image. If I don't like the image I can delete it and click one more image and then select the image and it should return back and display that image in the activity. ...
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Disable Logback in SpringBoot

It appears Springboot autoconfigures itself to use Logback with Tomcat. I would like to disable this and use the one I provide in my classpath. ...
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What is the difference between range and xrange functions in Python 2.X?

Apparently xrange is faster but I have no idea why it's faster (and no proof besides the anecdotal so far that it is faster) or what besides that is different about ...
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TypeScript sorting an array

I've been trying to figure out a very strange issue I ran into with typescript. It was treating an inline Boolean expression as whatever the first value's type was instead of the complete expression. ...
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

I know that the compiler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens. ...