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How should I read a file line-by-line in Python?

... There is exactly one reason why the following is preferred: with open('filename.txt') as fp: for line in fp: print line We are all spoiled by CPython's relatively deterministic reference-counting scheme for garbage collection. Other, hypothetical implementations of Pytho...
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ASP.NET MVC HandleError

...corresponding View named "Error" first in the Controller's View folder. If it can't find it there then it will proceed to look in the Shared View folder (which should have an Error.aspx file in it by default) [HandleError(ExceptionType = typeof(SqlException), View = "DatabaseError")] [HandleError(E...
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How do I show the value of a #define at compile-time?

I am trying to figure out what version of Boost my code thinks it's using. I want to do something like this: 14 Answers ...
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Bootstrapping still requires outside support

I've heard of the idea of bootstrapping a language, that is, writing a compiler/interpreter for the language in itself. I was wondering how this could be accomplished and looked around a bit, and saw someone say that it could only be done by either ...
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Removing all unused references from a project in Visual Studio projects

I just wondered if it possible within various Visual Studio versions to automatically remove all references from a project that were never been used? ...
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Convert String to Float in Swift

I'm trying to convert numbers taken from a UITextField, which I presume, are actually Strings, and convert them to Float, so I can multiply them. ...
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How do I set the rounded corner radius of a color drawable using xml?

On the android website, there is a section about color drawables . Defining these drawables in xml looks like this: 3 Ans...
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HTML text input field with currency symbol

... field containing the "$" sign in the very beginning, and no matter what editing occurs to the field, for the sign to be persistent. ...
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What is the function __construct used for?

I have been noticing __construct a lot with classes. I did a little reading and surfing the web, but I couldn't find an explanation I could understand. I am just beginning with OOP. ...
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“var” or no “var” in JavaScript's “for-in” loop?

What's the correct way to write a for-in loop in JavaScript? The browser doesn't issue a complaint about either of the two approaches I show here. First, there is this approach where the iteration variable x is explicitly declared: ...