> On Mar 2, 2015, at 3:55 PM, Juanjo Conti <jjco...@carouselapps.com> wrote:
> 
> Ok, I wanted to validate that the url is an absolute one. Is there
> something in Swift standard lib to do this?

I typically check whether url.scheme is a non-nil, non-empty string. You may 
also want to check the scheme if you need to restrict input to HTTP URLs, for 
instance. (For example, “a:b” is a perfectly valid absolute URL, but probably 
not one your app will find useful.) Keep in mind that URL schemes are 
case-insensitive, so “HTTP:” means the same as “http:”.

Also, this has nothing to do with the Swift library. NSURL is part of the 
Foundation framework, so this is independent of whether you’re using Swift or 
Objective-C.

—Jens
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