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How should I edit an Entity Framework connection string?

I recently had to edit my app.config file to change the connection string for an Entity Framework data model ( .edmx file). But I'd like to know: Is there a way to edit the EF connection string using the designer? ...
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How to round an average to 2 decimal places in PostgreSQL?

I am using PostgreSQL via the Ruby gem 'sequel'. 8 Answers 8 ...
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AngularJS: ng-repeat list is not updated when a model element is spliced from the model array

I have two controllers and share data between them with an app.factory function. 5 Answers ...
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Backwards migration with Django South

Ok, so this seems like a really silly thing to ask, and I'm sure I'm missing something somewhere. 3 Answers ...
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How to execute ipdb.set_trace() at will while running pytest tests

I'm using pytest for my test suite. While catching bugs in complex inter-components test, I would like to place import ipdb; ipdb.set_trace() in the middle of my code to allow me to debug it. ...
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)

I am getting error Expecting value: line 1 column 1 (char 0) when trying to decode JSON. 16 Answers ...
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How to sort with lambda in Python

In Python, I am trying to sort by date with lambda. I can't understand my error message. The message is: 4 Answers ...
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How do Third-Party “tracking cookies” work?

I have read this question here: How Do Internet Advertisers Use Third-Party Cookies? on how third-party tracking cookies work, but am still very confused. I don't understand how if I visit Website A (a normal website with ads) how Website B (an advertising website) can assign my computer an ID, a...
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How to unpack and pack pkg file?

I have a pkg file created by Install Maker for Mac. I want to replace one file in pkg. But I must do this under Linux system, because this is a part of download process. When user starts to download file server must replace one file in pkg. I have a solution how unpack pkg and replace a file but I d...
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Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit

I'm writing StoreKit-related code, and I'm getting some rather troubling error codes when I try to add a purchase to the queue. ...