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Random row from Linq to Sql
...de...
throw new NotImplementedException();
}
}
Then just order by ctx.Random(); this will do a random ordering at the SQL-Server courtesy of NEWID(). i.e.
var cust = (from row in ctx.Customers
where row.IsActive // your filter
orderby ctx.Random()
...
How do I get a class instance of generic type T?
...
The short answer is, that there is no way to find out the runtime type of generic type parameters in Java. I suggest reading the chapter about type erasure in the Java Tutorial for more details.
A popular solution to this is to pa...
How can I verify if one list is a subset of another?
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The performant function Python provides for this is set.issubset. It does have a few restrictions that make it unclear if it's the answer to your question, however.
A list may contain items multiple times and has a specific order. A...
Contains case insensitive
...against dynamic patterns):
if (!/Ral/i.test(referrer)) {
// ^i = Ignore case flag for RegExp
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Convert a python UTC datetime to a local datetime using only python standard library?
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In Python 3.3+:
from datetime import datetime, timezone
def utc_to_local(utc_dt):
return utc_dt.replace(tzinfo=timezone.utc).astimezone(tz=None)
In Python 2/3:
import calendar
from datetime import datetime, timedelta
def utc_to_local(utc_dt):
# ...
Parse (split) a string in C++ using string delimiter (standard C++)
...unction returns the position of the first occurrence of str in the string, or npos if the string is not found.
The substr(size_t pos = 0, size_t n = npos) function returns a substring of the object, starting at position pos and of length npos.
If you have multiple delimiters, after you have extr...
Can I automatically increment the file build version when using Visual Studio?
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In visual Studio 2008, the following works.
Find the AssemblyInfo.cs file and find these 2 lines:
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
You could try changing this to:
[assembly: AssemblyVersion("1.0.*")]
[assembly...
Git interoperability with a Mercurial Repository
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Update from June 2012. Currently there seem to be the following methods for Git/Hg interoperability when the developer wants to work from the git side:
Install Mercurial and the hg-git extension. You can do the latter using your package manager, or with easy_install hg-git. Then make sure the fo...
How to convert C# nullable int to int
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The other answers so far are all correct; I just wanted to add one more that's slightly cleaner:
v2 = v1 ?? default(int);
Any Nullable<T> is implicitly convertible to its T, PROVIDED that the entire expression being evaluated can never result in a nu...
What is the difference between ManualResetEvent and AutoResetEvent in .NET?
I have read the documentation on this and I think I understand. An AutoResetEvent resets when the code passes through event.WaitOne() , but a ManualResetEvent does not.
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