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Rails and PostgreSQL: Role postgres does not exist
I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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Check if something is (not) in a list in Python
I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch)
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Capitalize the first letter of both words in a two word string
Let's say that I have a two word string and I want to capitalize
both of them.
12 Answers
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HTML5 best practices; section/header/aside/article elements
There is enough information about HTML5 on the web (and also on stackoverflow), but now I'm curious about the "best practices". Tags like section/headers/article are new, and everyone has different opinions about when/where you should use these tags. So what do you guys think of the following layout...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
Regarding this .NET unhandled exception message:
5 Answers
5
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Interface type check with Typescript
This question is the direct analogon to Class type check with TypeScript
16 Answers
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What's the difference between @Component, @Repository & @Service annotations in Spring?
Can @Component , @Repository and @Service annotations be used interchangeably in Spring or do they provide any particular functionality besides acting as a notation device?
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How do I use a custom Serializer with Jackson?
I have two Java classes that I want to serialize to JSON using Jackson:
11 Answers
11
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How to find all duplicate from a List? [duplicate]
I have a List<string> which has some words duplicated. I need to find all words which are duplicates.
9 Answers
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Xcode Project vs. Xcode Workspace - Differences
I am trying to understand how the whole ecosystem of iOS works.
Until now, I could find an answer for most of my question (and trust me, there have been a lots of them), but for this one, there seems to be no clear answer yet.
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