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Difference between \A \z and ^ $ in Ruby regular expressions
In the documentation I read:
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What does && mean in void *p = &&abc;
I came across a piece of code void *p = &&abc; . What is the significance of && here?
I know about rvalue references but I think && used in this context is different. What does && indicate in void *p = &&abc; ?
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How can I access a JavaScript object which has spaces in the object's key?
I have a JavaScript object that looks something like this:
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Why Collections.sort uses merge sort instead of quicksort?
We know that quick sort is the fastest sorting algorithm.
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How does lucene index documents?
I read some document about Lucene; also I read the document in this link
( http://lucene.sourceforge.net/talks/pisa ).
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Rails “validates_uniqueness_of” Case Sensitivity
Here is the model (I am using SQLLite3):
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Difference between Document-based and Key/Value-based databases?
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The main differences are the data model and the querying capabilities.
Key-value stores
The first type is very simple and probably doesn't need any further explanation.
Data model: more than key-value stores
Although there is...
What does Html.HiddenFor do?
Although I have read the documentation on Html.HiddenFor, I've not grasped what is it used for...
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Best way to use html5 data attributes with rails content_tag helper?
The issue, of course, is that ruby symbols don't like hyphens. So something like this obviously won't work:
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Xcode 4 and Core Data: How to enable SQL Debugging
I'm working on a universal iOS app and I'd like to see the raw SQL in the logs when I'm debugging. There is some info in this blog post about how to enable raw SQL logging for iOS Core Data development. The given example is for Xcode 3 and it's just not clear to me how to enable this in Xcode 4.
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