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How do I make a column unique and index it in a Ruby on Rails migration?
...lacement for regular old model validations, check to see how it works. The error reporting to the user will likely not be as nice without model-level validations. You can always do both.
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htaccess Access-Control-Allow-Origin
...r set Access-Control-Allow-Origin "*" in your config, then it should throw error during start if mod_headers is not active.
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Flags to enable thorough and verbose g++ warnings
...romo -Wstrict-null-sentinel -Wstrict-overflow=5 -Wswitch-default -Wundef -Werror -Wno-unused
Questionable warnings that are present:
I include -Wno-unused because I often have variables that I know I
will use later, but do not yet have the functionality written for.
Removing warnings about that a...
What is & used for
...ersand".
&current; is not a standard character reference and so is an error (browsers may try to perform error recovery but you should not depend on this).
If you used a character reference for a real character (e.g. ™) then it (™) would appear in the URL instead of the string you ...
The backend version is not supported to design database diagrams or tables
...y created database through SQL Server Management Studio.
However I get the error:
4 Answers
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How to install Homebrew on OS X?
...hubusercontent.com/Homebrew/install/master/install)"
Gives the following error:
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
us...
“unrecognized import path” with go get
...official site (install from the tar file into /usr/local) I received the error above until I changed the GOROOT as above.
– Drew
Apr 10 '14 at 17:38
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What do *args and **kwargs mean? [duplicate]
... @PaulD.Waite: No problem. I wonder how many rookies found this error by trying to use your code, but were telling themselves "I must be doing something wrong here, this answer has so many votes" ;) Another upvote from me, because it is very clear and very good.
– Ta...
How to enable curl, installed Ubuntu LAMP stack?
... @Arsheep "didn't worked" is exceedingly unhelpful. Did it give you an error? Did your computer explode? Did your house burst into flames?
– Michael Mrozek
May 30 '10 at 18:41
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Program only crashes as release build — how to debug?
...bed in this answer.
In a production application you might want to send an error report back home, ideally together with a small memory dump that allows you to analyze the problem as described here.
b. Use Microsoft's structured exception handling mechanism that allows you to catch both hardware an...