[Newbies] How to sort a SortedCollection like you can sort a table in Excel?

[Bert Freudenberg]

On 12.04.2010, at 16:13, Paul DeBruicker wrote:
> 
> Hi - 
> 
> 
> If I had a SortedCollection of rectangular solid objects (that just have
> the ivars height, width, depth), how could I sort it by height, then
> width, then depth?
> 
> So three object:
> 
> A) h: 10, w: 5, d: 3
> B) h: 60, w: 2, d: 14
> C) h: 10, w: 3, d: 27
> 
> And then after sorting they'd be in this order: 
> 
> B) h: 60, w: 2, d: 14
> A) h: 10, w: 5, d: 3
> C) h: 10, w: 3, d: 27
> 
> First sorted by height, then by width, then by depth.  
> 
> Is there a way to do that using just a #sortBlock:  
> 

Sure. Basically your sort block would look like

	a height > b height or: [
		a height = b height and: [
			a width > b width or: [
				a width = b width and: [
					a depth > b depth]]]]


- Bert -