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Abusing the algebra of algebraic data types - why does this work?

...type checker). On the other hand, the constructions above spend a lot of time talking about counting inhabitants, and enumerating the possible values of a type is a useful concept here. That quickly leads us to enumerative combinatorics, and if you consult the linked Wikipedia article you'll find ...
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S3 Error: The difference between the request time and the current time is too large

I have error The difference between the request time and the current time is too large when call method amazons3.ListObjects ...
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Why can't we have static method in a (non-static) inner class?

Why can't we have static method in a non-static inner class? 14 Answers 14 ...
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CSS Display an Image Resized and Cropped

I want to show an image from an URL with a certain width and height even if it has a different size ratio. So I want to resize (maintaining the ratio) and then cut the image to the size I want. ...
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How to access the local Django webserver from outside world

I followed the instructions here to run Django using the built-in webserver and was able to successfully run it using python manage.py runserver . If I access 127.0.0.1:port locally from the webserver, I get the Django page indicating it worked. ...
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Deleting all files in a directory with Python

I want to delete all files with the extension .bak in a directory. How can I do that in Python? 7 Answers ...
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Controlling fps with requestAnimationFrame?

...//jsfiddle.net/m1erickson/CtsY3/ This method works by testing the elapsed time since executing the last frame loop. Your drawing code executes only when your specified FPS interval has elapsed. The first part of the code sets some variables used to calculate elapsed time. var stop = false; var f...
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How can I return camelCase JSON serialized by JSON.NET from ASP.NET MVC controller methods?

My problem is that I wish to return camelCased (as opposed to the standard PascalCase) JSON data via ActionResult s from ASP.NET MVC controller methods, serialized by JSON.NET . ...
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Fastest way to replace NAs in a large data.table

...t)) eval(parse(text=paste("dt[,",i,":=na.replace(",i,")]"))) } system.time(a_gdata = f_gdata(dt1)) user system elapsed 18.805 12.301 134.985 system.time(a_andrie = f_andrie(dt1)) Error: cannot allocate vector of size 305.2 Mb Timing stopped at: 14.541 7.764 68.285 system.time(f_dowl...
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PHP: If internet explorer 6, 7, 8 , or 9

I want to do a conditional in PHP for the different versions of Internet Explorer along the lines of: 17 Answers ...