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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 can specify th...
Check if a program exists from a Makefile
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Sometimes you need a Makefile to be able to run on different target OS's and you want the build to fail early if a required executable is not in PATH rather than to run for a possibly long time before failing.
The excellent solution provided by engineerchuan requires making a target. However, if ...
How to capitalize first letter of each word, like a 2-word city? [duplicate]
...ipt but it doesn't work well for diacritics For example it will transform "anders ångström" into "Anders åNgström". If you need the script to handle such strings then check stackoverflow.com/questions/15150168/…
– BearCode
Aug 26 '13 at 2:28
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Verify a certificate chain using openssl verify
...ot CA needs to self signed for verify to work. This is why your second command didn't work. Try this instead:
openssl verify -CAfile RootCert.pem -untrusted Intermediate.pem UserCert.pem
It will verify your entire chain in a single command.
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Difference between SurfaceView and View?
... if you need to update GUI rapidly or if the rendering takes too much time and affects user experience then use SurfaceView.
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How can I get a list of build targets in Ant?
...ts without having to search through the file manually. Does ant have a command for this - something like ant show-targets - that will make it list all the targets in the build file?
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Event system in Python
...raries to choose from, using very different terminology (events, signals, handlers, method dispatch, hooks, ...).
I'm trying to keep an overview of the above packages, plus the techniques mentioned in the answers here.
First, some terminology...
Observer pattern
The most basic style of event system ...
Gray out image with CSS?
... lower (to dull it). Alternatively, you could create a <div> overlay and set that to be gray (change the alpha to get the effect).
html:
<div id="wrapper">
<img id="myImage" src="something.jpg" />
</div>
css:
#myImage {
opacity: 0.4;
filter: alpha(opacity=40)...
Best way to strip punctuation from a string
...e that myself, but yours is better written than anything I would have done and now I can use it as a template for any future timing code I want to write:).
– Lawrence Johnston
Nov 5 '08 at 19:57
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Unexpected results when working with very big integers on interpreted languages
...he sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 Answers
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