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PG undefinedtable error relation users does not exist
...abase:
rake db:drop db:create db:migrate db:seed
or in short way (since 3.2):
rake db:migrate:reset db:seed
Since db:migrate:reset implies drop, create and migrate the db. Because the default environment for rake is development, in case if you see the exception in spec tests, you should re-cre...
What is the maximum size of a web browser's cookie's key?
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361
The 4K limit you read about is for the entire cookie, including name, value, expiry date etc. ...
Volatile vs. Interlocked vs. lock
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answered Sep 30 '08 at 20:13
Orion EdwardsOrion Edwards
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How to connect to Mysql Server inside VirtualBox Vagrant?
...ow can I connect to that server outside the vm? I already forward the port 3306 of the Vagrantfile , but when I try to connect to the mysql server, it`s resposts with the error:
'reading initial communication packet'
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iOS Remote Debugging
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113
Update:
This is not the best answer anymore, please follow gregers' advice.
New answer:
Use W...
What is the difference between NULL, '\0' and 0?
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358
Note: This answer applies to the C language, not C++.
Null Pointers
The integer constant l...
How to get the cuda version?
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723
As Jared mentions in a comment, from the command line:
nvcc --version
(or /usr/local/cuda/bi...
Is SHA-1 secure for password storage?
...e its output to 160 or 128 bits (to save on storage cost). Some of the SHA-3 round-2 candidates appear to be faster than SHA-1 while being arguably "more secure"; yet they are still a bit new, so sticking to SHA-256 or SHA-512 would be a safer route right now. It would make you look professional and...
How do I make Git use the editor of my choice for commits?
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3611
If you want to set the editor only for Git, do either (you don’t need both):
Set core.edi...