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open read and close a file in 1 line of code

... You don't really have to close it - Python will do it automatically either during garbage collection or at program exit. But as @delnan noted, it's better practice to explicitly close it for various reasons. So, what you can do to keep ...
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How do I get the full path to a Perl script that is executing?

...me of the script during execution. I discovered that depending on how you call the script $0 varies and sometimes contains the fullpath+filename and sometimes just filename . Because the working directory can vary as well I can't think of a way to reliably get the fullpath+filename of the scr...
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What is the 'new' keyword in JavaScript?

...n's external, accessible, prototype object (every function object automatically has a prototype property). It makes the this variable point to the newly created object. It executes the constructor function, using the newly created object whenever this is mentioned. It returns the newly created objec...
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How to calculate the bounding box for a given lat/lng location?

... I suggest to approximate locally the Earth surface as a sphere with radius given by the WGS84 ellipsoid at the given latitude. I suspect that the exact computation of latMin and latMax would require elliptic functions and would not yield an appreciable ...
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Which is better in python, del or delattr?

... (foo) 6 LOAD_CONST 1 ('bar') 9 CALL_FUNCTION 2 12 POP_TOP This translates into the first running slightly faster (but it's not a huge difference – .15 μs on my machine). Like the others have said, you should really...
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Algorithm to detect corners of paper sheet in photo

...n are awesome, move to them as soon as possible. :D Instead of removing small objects and or noise, lower the canny restraints, so it accepts more edges, and then find the largest closed contour (in OpenCV use findcontour() with some simple parameters, I think I used CV_RETR_LIST). might still stru...
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How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?

... Excellent. I wasn't trying to implement Elmah at all. I was just trying to hook up my own error reporting I've used for years in a way that works well with MVC. Your code gave me a starting point. +1 – Steve Wortham Nov 18 '09 at 3:...
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What is the difference between '/' and '//' when used for division?

...floating point division, and the latter is floor division, sometimes also called integer division. In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2.x to adopt the 3.x behavior. Regardless of the ...
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How to check version of python modules?

I just installed the python modules: construct and statlib with setuptools like this: 25 Answers ...
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How can I take more control in ASP.NET?

...l give you programmatic access to the controls in their entirety including all attributes on the controls. Also, only the text box values will appear in the URL upon submission so your GET request URL will be more "meaningful" <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JonSkeetFor...