It is like Object>>in: aBlock no?
On Wed, 23 Oct 2019, 10:27 Kasper Osterbye, <kasper.oster...@gmail.com>
wrote:
> You can define a method "=>" in Object as:
>
> => aBlock
> ^ aBlock value: self
>
> That would allow you to write expressions like this:
> 7 => [ :x | x+3 ] => [ :x| x*3 ],
>
> if you further define "=>" in Array as:
>
> => aBlock
> ^ aBlock valueWithArguments: self
>
>
> you are able to write your example:
> (([ :f :g | [ :x | f (g x) ] ]) [:x | x + 1] [:x | x - 1]) 5
>
> as:
>
> 5 => ({ [:x | x + 1]. [:x | x - 1]} => [ :f :g | [ :x | x => g =>f ] ]).
>
> It reads from left to right where yours is the usual Arabic (right to
> left) favoured in functional style.
>
>
>
