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Finding the average of a list

I have to find the average of a list in Python. This is my code so far 23 Answers 23 ...
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Is the primary key automatically indexed in MySQL?

Do you need to explicitly create an index, or is it implicit when defining the primary key? Is the answer the same for MyISAM and InnoDB? ...
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How to stop Visual Studio from “always” checking out solution files?

For apparently no reason, every time I open my solution, Visual Studio checks the sln file out. 8 Answers ...
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Why doesn't Dijkstra's algorithm work for negative weight edges?

Can somebody tell me why Dijkstra's algorithm for single source shortest path assumes that the edges must be non-negative. ...
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Extract source code from .jar file

Is there a way to extract the source code from an executable .jar file (Java ME)? 10 Answers ...
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Gdb print to file instead of stdout

I am running gdb and want to examine one of those unfortunate god objects. It takes many pages (and I have a 24" monitor turned sideways!) to see the whole thing. For ease of use, I'd like gdb to print the object to a file instead of the screen so that I can open it in vi and move around with ease...
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Can jQuery read/write cookies to a browser?

Simple example: I want to have some items on a page (like divs or table rows), and I want to let the user click on them to select them. That seems easy enough in jQuery. To save which items a user clicks on with no server-side post backs, I was thinking a cookie would be a simple way to get this don...
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Python integer incrementing with ++ [duplicate]

I've always laughed to myself when I've looked back at my VB6 days and thought, "What modern language doesn't allow incrementing with double plus signs?": ...
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How to view/delete local storage in Firefox?

In Google Chrome there is an easy way to see what's in local storage as well as modify or delete it after inspecting it. 7 ...
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Why does JQuery have dollar signs everywhere?

I am working on a project with quite a lot of JQuery in it. The JQuery has a lot of $ signs everywhere, for example 7 Answ...