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Are foreign keys really necessary in a database design?
... ON DELETE CASCADE. This means that if you have one table containing users and another containing orders or something, then deleting a user could automatically delete all orders that point to that user.
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CSS opacity only to background color, not the text on it? [duplicate]
...assign the opacity property to the background property of a div only and not to the text on it?
11 Answers
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How to use the IEqualityComparer
...the solution is to forward GetHashCode to Class_reglement.Numf.GetHashCode and implement it appropriately there.
Apart from that, your Equals method is full of unnecessary code. It could be rewritten as follows (same semantics, ¼ of the code, more readable):
public bool Equals(Class_reglement x, ...
How to do multiple arguments to map function where one remains the same in python?
...ally is an issue for you, the speed difference between list comprehensions and map() won't help either way.
– Sven Marnach
May 31 '12 at 13:54
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How do I capitalize first letter of first name and last name in C#?
Is there an easy way to capitalize the first letter of a string and lower the rest of it? Is there a built in method or do I need to make my own?
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I am getting Failed to load resource: net::ERR_BLOCKED_BY_CLIENT with Google chrome
... its work with .net Client properly Do I need any settings in the browser?
and the link will come after the error
12 Answer...
Getting the name of a variable as a string
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This glosses over all kinds of problems and caveats and gives the misleading impression that variable name inspection is something people can expect to "just work". For example, if you try to use varname.nameof as the retrieve_name function in the question, you get...
How to copy files between two nodes using ansible
...ate_to: serverB cannot be used, because that would make serverB the source and destination.
– Strahinja Kustudic
Apr 19 '16 at 22:10
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What is the convention for word separator in Java package names?
... of a unique package name is always written in all-lowercase ASCII letters and should be one of the top-level domain names, currently com, edu, gov, mil, net, org, or one of the English two-letter codes identifying countries as specified in ISO Standard 3166, 1981.
Subsequent components of the ...
What is SYSNAME data type in SQL Server?
...est. It is mainly used by Microsoft when building the internal sys tables and stored procedures etc within SQL Server.
For example, by executing Exec sp_help 'sys.tables' you will see that the column name is defined as sysname this is because the value of this is actually an object in itself (a ta...