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Am 24.03.2010 16:48, schrieb Eike Decker:

I would see a benefit in conjunction with final functions, where the
keyword "final" would put up the requirement "Function without a
sideeffect", e.g.

final function a (y) return y*2 end
final function b (x)
   y = x; --<-- compile time error, not a function without sideeffect
due to global variable assignment
   return val + x

Insteat of "final function ..." I would prefer "functional ...", but that is not the topic here.