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Rename a dictionary key

Is there a way to rename a dictionary key, without reassigning its value to a new name and removing the old name key; and without iterating through dict key/value? In case of OrderedDict, do the same, while keeping that key's position. ...
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Design Pattern for Undo Engine

I'm writing a structural modeling tool for a civil enginering application. I have one huge model class representing the entire building, which include collections of nodes, line elements, loads, etc. which are also custom classes. ...
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Set up a scheduled job?

I've been working on a web app using Django, and I'm curious if there is a way to schedule a job to run periodically. 24 A...
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Choosing a Java Web Framework now? [closed]

we are in the planning stage of migrating a large website which is built on a custom developed mvc framework to a java based web framework which provides built-in support for ajax, rich media content, mashup, templates based layout, validation, maximum html/java code separation. Grails looked like a...
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Why is the default value of the string type null instead of an empty string?

It's quite annoying to test all my strings for null before I can safely apply methods like ToUpper() , StartWith() etc... ...
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C++ Best way to get integer division and remainder

I am just wondering, if I want to divide a by b, and am interested both in the result c and the remainder (e.g. say I have number of seconds and want to split that into minutes and seconds), what is the best way to go about it? ...
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How to strip all non-alphabetic characters from string in SQL Server?

How could you remove all characters that are not alphabetic from a string? 18 Answers ...
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Real World Example of the Strategy Pattern

I've been reading about the OCP principal and how to use the strategy pattern to accomplish this. 17 Answers ...
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Shuffle two list at once with same order

I'm using the nltk library's movie_reviews corpus which contains a large number of documents. My task is get predictive performance of these reviews with pre-processing of the data and without pre-processing. But there is problem, in lists documents and documents2 I have the same documents ...
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How to concatenate two numbers in javascript?

I'd like for something like 5 + 6 to return "56" instead of 11 . 16 Answers 16 ...