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What's the state of the art in email validation for Rails?
What are you using to validate users' email addresses, and why?
13 Answers
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
What is the difference between Class.forName() and Class.forName().newInstance() ?
9 Answers
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How to check iOS version?
I want to check if the iOS version of the device is greater than 3.1.3
I tried things like:
37 Answers
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“Width equals height” constraint in Interface Builder
I can't find a way to create a 'square' constraint, meaning 'width equals height' in Interface Builder. I guess it's possible to add such constraint programmatically. Is there something I can do in IB? Maybe I just don't see it? It seems trivial, yet I can't find it.
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
I am defining a custom filter like so:
10 Answers
10
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Can I export a variable to the environment from a bash script without sourcing it?
Suppose that I have this script
7 Answers
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How do I merge a git tag onto a branch
I'm trying to find the syntax for merging a tagged commit onto another branch. I'm guessing that it's straight forward but my feeble search attempts aren't finding it.
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Loop through each row of a range in Excel
This is one of those things that I'm sure there's a built-in function for (and I may well have been told it in the past), but I'm scratching my head to remember it.
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Java: What is the difference between and ?
I am unable to understand the following text... Does it mean that <clinit> is for empty constructors? Why is important to have two different versions?
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Why are Docker container images so large?
I made a simple image through Dockerfile from Fedora (initially 320 MB).
8 Answers
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