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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
...ay no longer require an external queueing system since it's now simple to fetch 'n' rows that no other session has locked, and keep them locked until you commit confirmation that the work is done. It even works with two-phase transactions for when external co-ordination is required.
External queuei...
Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
...example shared entity types and their passing from one context to another, etc. Generally it is possible, it can make your design much cleaner and separate different functional areas but it has its costs in additional complexity.
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Difference between Rebuild and Clean + Build in Visual Studio
...uild project of B using the old project A then rebuild A, then rebuild C. etc. A full solution Clean followed by a full solution build will catch this situation while a rebuild won't. So the more paranoid and tired you are, the more you should favor towards Clean then Build.
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Insert/Update Many to Many Entity Framework . How do I do it?
...table linking them together.
You basically do the same for updates. Just fetch the data, modify the graph by adding and removing objects from collections, call SaveChanges. Check this similar question for details.
Edit:
According to your comment, you need to insert a new Class and add two existin...
In SQL Server, when should you use GO and when should you use semi-colon ;?
...o that particular batch.
Any declarations of Variables, Table Variables, etc do not go across GO statements.
#Temp tables are local to a connection, so they span across GO statements.
Semicolon
A Semicolon is a statement terminator. This is purely used to identify that a particular statement ha...
Is it possible to set a number to NaN or infinity?
...mpy arrays and everything that can be converted to one (like lists, tuple, etc.)
There are also functions that explicitly check for positive and negative infinity in NumPy: numpy.isposinf and numpy.isneginf.
Pandas offers two additional functions to check for NaN: pandas.isna and pandas.isnull (but ...
The provider is not compatible with the version of Oracle client
...o issue since moving over to it / you can set your projects back to AnyCPU etc and it works great :)
– Tod Thomson
Nov 28 '13 at 5:58
5
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Python function overloading
...amp; ...) regular_bullet(...)
else if (...) curved_bullet(...)
//..etc..
}
Pass as many arguments to the c_function that exist, then do the job of determining which c function to call based on the values in the initial c function. So, python should only ever be calling the one c function. ...
SQL Server insert if not exists best practice
...have some "old" and "new" fields - oldEmail, newEmail, oldPhone, newPhone, etc. That way you can form a composite key, in Competitors, from CompetitorName, Email, and Phone.
Then when you have some competition results, you can truncate and reload your CompetitionResults table from your excel sheet ...
Citing the author of a blockquote using Markdown syntax
...nual, use its guidelines to determine exactly where to place the citation, etc.
Output of Markdown + Smartypants for the above is
The secret to creativity is knowing how to hide your sources.
-- Albert Einstein
shar...