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Find region from within an EC2 instance
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Thanks @FlorinAndrei. Works for me now too.
– Adam Monsen
Mar 13 '14 at 16:44
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Can't access RabbitMQ web management interface after fresh install
... test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"
Now you can access using test test.
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How can I use UIColorFromRGB in Swift?
...0FF) / 255.0,
alpha: CGFloat(1.0)
)
}
}
This can now be used like so:
view.backgroundColor = UIColor(rgb: 0x209624)
I would only recommend monkey patching UIKit classes like this in your own client code, not libraries.
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What are the differences between JSON and JavaScript object? [duplicate]
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First you should know what JSON is:
It is language agnostic data-interchange format.
The syntax of JSON was inspired by the JavaScript Object Literal notation, but there are differences between them.
For example, in JSON all keys must be ...
How to Delete using INNER JOIN with SQL Server?
...ring. In my setup if I delete from the 2 tables separately I don't really know anymore which rows to delete from the 2nd table so this will help :)
– Verena Haunschmid
Aug 24 '16 at 5:56
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Detecting if an NSString contains…?
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In iOS8 you can now use:
BOOL containsString = [@"Here is my string." containsString:@"is"];
There's an interesting post on how to "retrofit" it to iOS7 here:
http://petersteinberger.com/blog/2014/retrofitting-containsstring-on-ios-7/
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Displaying the #include hierarchy for a C++ file in Visual Studio
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There is now a plugin for Visual Studio called IncludeToolbox. It can list your dependent includes and do more things like a random remove and compile to see if that include was required.
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How to enable NSZombie in Xcode?
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Environment variables are now part of the "scheme".
To edit the scheme and turn on zombies:
In the "Product" menu, select "Edit Scheme".
Go to the "Run Foo.app" stage in the left panel, and the "Arguments" tab on the right.
Add NSZombieEnabled to ...
What does string::npos mean in this code?
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is to define your own signed value for npos:
const int NPOS = -1;
Now the comparison looks a bit different and even more convenient:
if (idx == NPOS) { // works almost always
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}
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How to get a list of user accounts using the command line in MySQL?
... using the MySQL command line utility and can navigate through a database. Now I need to see a list of user accounts. How can I do this?
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