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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
I am trying to save Employee details, which has references with City. But everytime I try to save my contact, which is validated I get the exception "ADO.Net Entity Framework An entity object cannot be referenced by multiple instances of IEntityChangeTracker"
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Calculate MD5 checksum for a file
I'm using iTextSharp to read the text from a PDF file. However, there are times I cannot extract text, because the PDF file is only containing images. I download the same PDF files everyday, and I want to see if the PDF has been modified. If the text and modification date cannot be obtained, is a ...
How do I put a bunch of uncommitted changes aside while working on something else
If I have a bunch of uncommitted changes and want to set it aside while working on something else instead, and then later (f.i. after several days) come back to it and proceed working. What would be the easiest workflow to accomplish this? (So far I have only experience with Mercurial's basic functi...
How to validate an email address in JavaScript
...ail address:</p>
<input id='email'>
<button type='submit' id='validate'>Validate!</button>
</form>
<h2 id='result'></h2>
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How to get the path of a running JAR file?
...etCodeSource().getLocation()
.toURI()).getPath();
Replace "MyClass" with the name of your class.
Obviously, this will do odd things if your class was loaded from a non-file location.
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Why are Oracle table/column/index names limited to 30 characters?
I can understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
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Internet Explorer 9 not rendering table cells properly
My website has always run smoothly with IE8, IE7, FF, Chrome and Safari. Now I'm testing it on IE9 and I'm experiencing a strange problem: in some pages, some tabular data renders incorrectly.
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Asynchronous method call in Python?
...ondering if there's any library for asynchronous method calls in Python . It would be great if you could do something like
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Why doesn't adding CORS headers to an OPTIONS route allow browsers to access my API?
...and read a few articles about how CORS works. First, I did this (code is written in CoffeeScript syntax):
32 Answers
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How to add a vertical Separator?
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edited Nov 16 '14 at 15:22
Chnossos
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