[Newbies] Sorting

[Edward Stow]

On 17/05/07, Chris Cunnington <cunnington at sympatico.ca> wrote:
> Hi Squeakers,
>
> I have a string: 'Hello'.
>
> To reverse the letters I write:
>
>  a := 'Hello' reverse.
>
> And I get 'olleH'.
>
> How do I sort the letters alphabetically? So I get 'eHllo'?
>
>  a := 'Hello' sortBy: [:x :y | a < b ]
>
> What parameter do you use to sort the letters? Do you have to convert them
> to a number, an Ascii or Unicode number first, and then sort those numbers?
>
 a := 'Hello' sort: [:x :y |   x < y ]
 or
 a := 'Hello' sort: [:a :b |   a < b ]  but convention is to use x and
y block parameters.

Each element of the string is a Character and has the #< defined.
Note that 'Hello' is already sorted in Character order.

Others may like to comment on why

#sortBy: does not return a string.

-- 

Edward Stow