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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...n CityService. Later you add a city1 as a reference to the new Employee e1 and add e1 including this reference to city1 to the context in EmployeeService. As a result you have city1 attached to two different context which is what the exception complains about.
You can fix this by creating a context...
what happens when you type in a URL in browser [closed]
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Attention: this is an extremely rough and oversimplified sketch, assuming the simplest possible HTTP request (no HTTPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and n...
Is there a .NET/C# wrapper for SQLite? [closed]
...ges on this repository but is no longer an active contributor. Development and maintenance work is now mostly performed by the SQLite Development Team. The SQLite team is committed to supporting System.Data.SQLite long-term.
"System.Data.SQLite is the original SQLite database engine and a complete...
Binary search (bisection) in Python
Is there a library function that performs binary search on a list/tuple and return the position of the item if found and 'False' (-1, None, etc.) if not?
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OO Design in Rails: Where to put stuff
I'm really enjoying Rails (even though I'm generally RESTless), and I enjoy Ruby being very OO. Still, the tendency to make huge ActiveRecord subclasses and huge controllers is quite natural (even if you do use a controller per resource). If you were to create deeper object worlds, where would you p...
CSS to make HTML page footer stay at bottom of the page with a minimum height, but not overlap the p
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for dynamic content just omit the "height" and the footer will adapt to content. Not tested in all browser
– m47730
Sep 23 '15 at 7:58
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How many concurrent requests does a single Flask process receive?
I'm building an app with Flask, but I don't know much about WSGI and it's HTTP base, Werkzeug. When I start serving a Flask application with gunicorn and 4 worker processes, does this mean that I can handle 4 concurrent requests?
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git: difference between “branchname” and “refs/heads/branchname”
Best to be explained at an example: I am on branch 0.58 of repository and this his how I pull:
3 Answers
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How do the major C# DI/IoC frameworks compare? [closed]
At the risk of stepping into holy war territory, What are the strengths and weaknesses of these popular DI/IoC frameworks, and could one easily be considered the best? ..:
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Generate random number between two numbers in JavaScript
Is there a way to generate a random number in a specified range (e.g. from 1 to 6: 1, 2, 3, 4, 5, or 6) in JavaScript?
23 A...