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.

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