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MySQL Cannot drop index needed in a foreign key constraint

I need to ALTER my existing database to add a column. Consequently I also want to update the UNIQUE field to encompass that new column. I'm trying to remove the current index but keep getting the error MySQL Cannot drop index needed in a foreign key constraint ...
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Wrapping a C library in Python: C, Cython or ctypes?

I want to call a C library from a Python application. I don't want to wrap the whole API, only the functions and datatypes that are relevant to my case. As I see it, I have three choices: ...
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Why aren't python nested functions called closures?

I have seen and used nested functions in Python, and they match the definition of a closure. So why are they called nested functions instead of closures ? ...
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PHP function to make slug (URL string)

I want to have a function to create slugs from Unicode strings, e.g. gen_slug('Andrés Cortez') should return andres-cortez . How should I do that? ...
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How to identify unused css definitions

Are there any good approaches to help identify unused css definitions in a project? A bunch of css files were pulled in and now I'm trying to clean things up a bit. ...
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C# Object Pooling Pattern implementation

Does anyone have a good resource on implementing a shared object pool strategy for a limited resource in vein of Sql connection pooling? (ie would be implemented fully that it is thread safe). ...
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What are the differences between virtual memory and physical memory?

I am often confused with the concept of virtualization in operating systems. Considering RAM as the physical memory, why do we need the virtual memory for executing a process? ...
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How to decide between MonoTouch and Objective-C? [closed]

After sitting through a session today on Mono at a local .Net event, the use of MonoTouch was 'touched' upon as an alternative for iPhone development. Being very comfortable in C# and .Net, it seems like an appealing option, despite some of the quirkiness of the Mono stack. However, since MonoTouc...
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What is the difference between the WPF TextBlock element and Label control? [duplicate]

Visually both of the following snippets produce the same UI. So why are there 2 controls.. Snippet1 6 Answers ...
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How to parse JSON to receive a Date object in JavaScript?

I have a following piece of JSON: 17 Answers 17 ...