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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...y 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
...fied. If the text and modification date cannot be obtained, is a MD5 checksum the most reliable way to tell if the file has changed?
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How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
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fracz
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answered Feb 15 '13 at 16:16
Liviu T.Liviu T....
Accessing JPEG EXIF rotation data in JavaScript on the client side
I'd like to rotate photos based on their original rotation, as set by the camera in JPEG EXIF image data. The trick is that all this should happen in the browser, using JavaScript and <canvas> .
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SQL set values of one column equal to values of another column in the same table
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Sounds like you're working in just one table so something like this:
update your_table
set B = A
where B is null
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Google OAuth 2 authorization - Error: redirect_uri_mismatch
..., or haven't done it correctly.
Go to the console for your project and look under API Access. You should see your client ID & client secret there, along with a list of redirect URIs. If the URI you want isn't listed, click edit settings and add the URI to the list.
EDIT: (From a highly rated ...
Best way to obfuscate an e-mail address on a website?
I've spent the past few days working on updating my personal website. The URL of my personal website is (my first name).(my last name).com, as my last name is rather unusual, and I was lucky enough to pick up the domain name. My e-mail address is (my first name)@(my last name).com. So really, when i...
How can I drop all the tables in a PostgreSQL database?
How can I drop all tables in PostgreSQL, working from the command line?
24 Answers
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Incompatible implicit declaration of built-in function ‘malloc’
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You likely forgot to include <stdlib.h>.
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How do I access the command history from IDLE?
On bash or Window's Command Prompt, we can press the up arrow on keyboard to get the last command, and edit it, and press ENTER again to see the result.
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