> On 7 Nov 2015, at 20:48, Roland King <r...@rols.org> wrote:
> 
> Quincey explained why it doesn’t work, value semantics run deep and 
> consistent in Swift. 
> 
> What you could do if you wanted, after messing with images, put it back into 
> the json dictionary again, after your for var image in .. code
> 
> json[ “images” ] = images
> 
> now you have modified json to have a new images member. 

oh not quite - you’re modifying images too - so you have to replace each image 
in that as well as you go. 

perhaps use one of the array operators which takes an array and returns a new 
array to get new images from old. 
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