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Python constructors and __init__

...nce of C after it is created. For example Python allows you to do: class Test(object): pass t = Test() t.x = 10 # here you're building your object t print t.x But if you want every instance of Test to have an attribute x equal to 10, you can put that code inside __init__: class Test(obj...
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What's the fastest way to merge/join data.frames in R?

... the precise computation can make a huge difference on which package is fastest. For example, we do a merge and an aggregate below. We see that the results are nearly reversed for the two. In the first example from fastest to slowest we get: data.table, plyr, merge and sqldf whereas in the second...
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How to output in CLI during execution of PHP Unit tests?

When running a PHPUnit test, I would like to be able to dump output so I can debug one or two things. 17 Answers ...
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How do I test a file upload in rails?

...ng the JSON files to do some user maintenance for our application. In user testing the file upload and processing works, but of course I would like to automate the process of testing the user maintenance in our testing. How can I upload a file to a controller in the functional testing framework? ...
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How do you use script variables in psql?

...ontrary to Bryce's report, it seems to work fine for me. CREATE TABLE test (name VARCHAR, age INT); INSERT INTO test (name, age) VALUES ('Jack', 21), ('Jill', 20); WITH vars AS (SELECT N'Jack' AS name, 21 AS age) SELECT test.* FROM test, vars WHERE test.name = vars.name and te...
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What's the best way to convert a number to a string in JavaScript? [closed]

...pears for raw speed there is an advantage for .toString() See Performance tests here (not by me, but found when I went to write my own): http://jsben.ch/#/ghQYR Fastest based on the JSPerf test above: str = num.toString(); It should be noted that the difference in speed is not overly significant ...
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Visual Studio 2013 doesn't discover unit tests

...2013 that is composed by one web project, one library project and one unit test project. When I open the solution and try to run the unit tests they are not discover by visual studio. To run the tests I try to go to the menu and choose Test -> Run -> Run all tests or by opening the test explorer win...
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How to copy a directory structure but only include certain files (using windows batch files)

...S are you using? Do you have the necessary file/folder permissions? I just tested on Win 7 and *.zip worked for me. – aphoria Sep 20 '12 at 9:56 ...
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Get file name from URI string in C#

... Also beware of a querystring. http://www.test.com/file1.txt?a=b will result in file1.txt?a=b – Julian Mar 10 '15 at 12:44 ...
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Python - doctest vs. unittest [closed]

I'm trying to get started with unit testing in Python and I was wondering if someone could explain the advantages and disadvantages of doctest and unittest. ...