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Scala: What is the difference between Traversable and Iterable traits in Scala collections?

I have looked at this question but still don't understand the difference between Iterable and Traversable traits. Can someone explain ? ...
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What does the construct x = x || y mean?

I am debugging some JavaScript, and can't explain what this || does? 12 Answers 12 ...
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SQL Server NOLOCK and joins

Background: I have a performance-critical query I'd like to run and I don't care about dirty reads. 3 Answers ...
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How to get equal width of input and select fields

On the form, I have one select and two input fields. These elements are vertically aligned. Unfortunately, I can't get equal width of these elements. ...
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ASP.NET: Session.SessionID changes between requests

...r implement the Session_Start method in the application's Global.asax file and store data in the Session object to fix the session ID, or you can use code in another part of your application to explicitly store data in the Session object. http://msdn.microsoft.com/en-us/library/system.web.sessions...
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Change type of varchar field to integer: “cannot be cast automatically to type integer”

I have a small table and a certain field contains the type " character varying ". I'm trying to change it to " Integer " but it gives an error that casting is not possible. ...
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How to encode a URL in Swift [duplicate]

...3.0 var address = "American Tourister, Abids Road, Bogulkunta, Hyderabad, Andhra Pradesh, India" let escapedAddress = address.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed) let urlpath = String(format: "http://maps.googleapis.com/maps/api/geocode/json?address=\(escapedAd...
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In-Place Radix Sort

...rt for DNA. It's written in D because that's the language that I use most and therefore am least likely to make silly mistakes in, but it could easily be translated to some other language. It's in-place but requires 2 * seq.length passes through the array. void radixSort(string[] seqs, size_t base...
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GitHub: Reopening a merged pull request

I've now fixed the bug and want to resubmit the pull request with 1 extra commit. Is there any way to reopen the pull request or update it, or do I have to create a new pull request, type out the description etc again? Gitorious has this feature and we've recently moved to GitHub. ...
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How to add multiple font files for the same font?

...le , but I don't get one thing. I have separate files for bold , italic and bold + italic . How can I embed all three files in one @font-face rule? For example, if I have: ...