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Rails and PostgreSQL: Role postgres does not exist
...e many people said here, run createuser -s USER, but that gave me the same error. This finally worked for me:
$ sudo su
# su postgres
# createuser -s --username=postgres MYUSERNAME
The createuser -s --username=postgres creates a superuser (-s flag) by connecting as postgres (--username=postgres ...
How does interfaces with construct signatures work?
...tructor (public name: string, count: number) {
}
}
makeObj(Other); // Error! Other's constructor doesn't match StringConstructable
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Sending a message to nil in Objective-C
...otten your ArrayList from a method which returns NULL if it runs into some error generating the ArrayList like someObject.foo(otherObject.getArrayList());
Of course, you'll also have problems if you do something like this:
ArrayList list = NULL;
list.size();
Now, in Objective-C, we have the equi...
An App ID with Identifier '' is not available. Please enter a different string
...add a new APP ID to prepare for App Store submission and got the following error under the bundle ID I provided.
44 Answers...
Doing something before program exit
...n of the script, but it won't get called in all cases (e.g. fatal internal errors).
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What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...lidated arguments (from user input or from function user) you may get this error:
private static string[] RomanNumbers =
new string[] { "I", "II", "III", "IV", "V" };
public static string Romanize(int number)
{
return RomanNumbers[number];
}
Unexpected Results
This exception may be throw...
Prevent double submission of forms in jQuery
...bute true but unobtrusive validation prevents submitting due to validation errors. After correcting errors one cannot submit the form because submitted attribute is true!
– cck
Oct 22 '13 at 12:34
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How to remove elements from a generic list while iterating over it?
... dreaded "Collection was modified; enumeration operation may not execute." error. The compiler makes a copy of "list", so that you can safely do the remove on the array.
While this pattern is not super efficient, it has a natural feel and is flexible enough for almost any situation. Such as when y...
The type must be a reference type in order to use it as parameter 'T' in the generic type or method
...r into generics and now have a situation I need help with. I get a compile error on the 'Derived' class below as shown in the subject title. I see many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this?
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How to retrieve POST query parameters?
...
This code gave me errors as middleware is no longer bundled with Express; you'll have to use body-parser: github.com/senchalabs/connect#middleware
– araneae
Jun 13 '14 at 14:00
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