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Transitivity of Auto-Specialization in GHC

... Short answers: The question's key points, as I understand them, are the following: "is the auto-specialization transitive?" Should I only expect (+) to be specialized transitively with an explicit pragma? (apparently intended) Is this a bug of GHC? Is it inconsistent...
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RandomForestClassifier vs ExtraTreesClassifier in scikit learn

Can anyone explain the difference between the RandomForestClassifier and ExtraTreesClassifier in scikit learn. I've spent a good bit of time reading the paper: ...
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Techniques for Tracing Constraints

Here's the scenario: I've written some code with a type signature and GHC complains could not deduce x ~ y for some x and y . You can usually throw GHC a bone and simply add the isomorphism to the function constraints, but this is a bad idea for several reasons: ...
https://www.tsingfun.com/it/cpp/1496.html 

c++ boost::multi_index composite keys efficiency - C/C++ - 清泛网 - 专注C/C++及内核技术

...ime poster! I'm playing around with the boost::multi_index container stuff and have a...Long time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that hopefully a boost or C++ container expert might know (my knowledge in C+...
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RegEx: Grabbing values between quotation marks

... ([""']) match a quote; ((?=(\\?))\2.) if backslash exists, gobble it, and whether or not that happens, match a character; *? match many times (non-greedily, as to not eat the closing quote); \1 match the same quote that was use for opening. ...
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Printing without newline (print 'a',) prints a space, how to remove?

...aaaaaaaaaaaaaaaaaaa If you want to do this in general, build up a string and then print it once. This will consume a bit of memory for the string, but only make a single call to print. Note that string concatenation using += is now linear in the size of the string you're concatenating so this will...
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SQLite in Android How to update a specific row

I've been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I've read and tried, you can just use the: ...
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ASP.NET Web API - PUT & DELETE Verbs Not Allowed - IIS 8

... to the bottom of this. You need to jump through some hoops to get the PUT and DELETE verbs working correctly with IIS8. In fact if you install the release candidate of VS 2012 and create a new WEB API project you'll find that the sample PUT and DELETE methods return 404 errors out of the box. To u...
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Calculating arithmetic mean (one type of average) in Python

Is there a built-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers? ...
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Passing by reference in C

... Because you're passing the value of the pointer to the method and then dereferencing it to get the integer that is pointed to. share | improve this answer | foll...