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Unique Constraint in Entity Framework Code First
...ern you can use with your code-first setup, though admittedly it's not database agnostic:
public class MyRepository : DbContext {
public DbSet<Whatever> Whatevers { get; set; }
public class Initializer : IDatabaseInitializer<MyRepository> {
public void InitializeDatabas...
How to edit one specific row in Microsoft SQL Server Management Studio 2008?
...erver Management Studio 2008, is there a secret to be able to edit one row based on a key?
3 Answers
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ETag vs Header Expires
...t to do is use BOTH headers - set the Expires header to a reasonable value based on how often the content changes. Then configure ETags to be sent so that when clients DO send a request to the server, it can more easily determine whether or not to send the file back.
One last note about ETag - if ...
CSS: 100% font size - 100% of what?
...account, either through the use of completely relative units or JavaScript-based dynamic resizing.
– Triynko
Feb 17 '15 at 22:54
1
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How to sum a variable by group
...umber of groups. Both data,table and dplyr will be quite a lot faster than base functions, however (can well be 100-1000 times faster for some operations). Also see here
– talat
Jan 23 '15 at 14:50
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BaseException.message deprecated in Python 2.6
I get a warning that BaseException.message is deprecated in Python 2.6 when I use the following user-defined exception:
8 A...
Difference between doseq and for in Clojure
...q [x [1 2 3]] (println x))
1
2
3
nil
If you want to build a new sequence based on other sequences, use for. If you want to do side-effects (printing, writing to a database, launching a nuclear warhead, etc) based on elements from some sequences, use doseq.
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How can I generate a unique ID in Python? [duplicate]
I need to generate a unique ID based on a random value.
8 Answers
8
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XML Schema: Element with attributes containing only text?
...name="AttrElement">
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="value" type="xs:string">
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
...
Where is Vagrant saving changes to the VM?
...
Vagrant imports the base box which is located at ~/.vagrant.d/boxes/, like you said.
This is where the base boxes are kept. It uses it to start a VM from the clean state. When importing a VM, the responsibility of where to store data files and V...