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Unique Key constraints for multiple columns in Entity Framework
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With Entity Framework 6.1, you can now do this:
[Index("IX_FirstAndSecond", 1, IsUnique = true)]
public int FirstColumn { get; set; }
[Index("IX_FirstAndSecond", 2, IsUnique = true)]
public int SecondColumn { get; set; }
The second parameter in the attribute is where you...
Shortcut to comment out a block of code with sublime text
...nt with
Ctrl+Shift+/
Source: http://www.sublimetext.com/forum/viewtopic.php?f=3&t=2967
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foreach vs someList.ForEach(){}
...erate the list backwards with a for loop, you can remove items without any index-shift problems.
– S. Tarık Çetin
Aug 24 '16 at 22:48
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Checking if a folder exists using a .bat file [closed]
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For a directory look at this https://jeffpar.github.io/kbarchive/kb/065/Q65994/
C:
IF NOT EXIST C:\WIN\ GOTO NOWINDIR
CD \WIN
:NOWINDIR
trailing backslash ('\') seems to be enough to distinguish between directories and ordinary files.
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How to create a unique index on a NULL column?
...tp://sqlservercodebook.blogspot.com/2008/04/multiple-null-values-in-unique-index-in.html
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PhpStorm text size
Is it possible to define a shortcut to increase/decrease size of code in PhpStorm, like what you can do in Notepad++ with CTRL + Mouse Wheel ?
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How do I enable index downloads in Eclipse for Maven dependency search? [duplicate]
...and then choose Maven in the left side.
Check the box "Download repository index updates on startup".
Optionally, check the boxes Download Artifact Sources and Download Artifact JavaDoc.
Click OK. The warning won't appear anymore.
Restart Eclipse.
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c++ boost::multi_index composite keys efficiency - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ boost::multi_index composite keys efficiencyLong time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a...Long time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that ...
Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
SQL server query to get the list of columns in a table along with Data types, NOT NULL, and PRIMARY
... sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN
sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN
sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE
c.object_id = OBJECT_ID('YourTableName')
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