Editing Oz (programming language) (section)

====Higher-order programming====
Functions are like other Oz objects. A function can be passed as an attribute to other functions or can be returned in a function. 
<syntaxhighlight lang="erlang">
fun {Square N}  % A general function
   N*N
end

fun {Map F Xs}  % F is a function here - higher order programming
   case Xs
      of nil then nil
      [] X|Xr then {F X}|{Map F Xr}
   end
end

%usage
{Browse {Map Square [1 2 3]}}  %browses [1 4 9] 
</syntaxhighlight>