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[REBOL] Re: Functional programming in REBOL

From: lmecir:mbox:vol:cz at: 7-Aug-2001 13:03

Hi myself,
> In I call such a function E-FUNC. The > difference is, that E-FUNC is neither shorter, nor more elegant, but "more > general" in some aspects, e.g. it supports datatype checking and doesn't > have trouble with "active arguments" like functions, words, paths, ...
Larry, your CFUNC doesn't have trouble with "active arguments". Some differences: f1: e-func [x [any-type!]] [type? get/any 'x] f1 () ; == unset! while g1: cfunc [x [any-type!]] [type? get/any 'x] ** Script Error: Expected one of: word! - not: block! ** Where: to-get-word ** Near: to get-word! :value f2: e-func [:x] [type? get/any 'x] f2 // ; == op! while g2: cfunc [:x] [type? get/any 'x] g2 // ; == get-word! f3: e-func [do] [type? get/any 'do] f3 "OK" ; == string! while g3: cfunc [do] [type? get/any 'do] g3 "OK" ; == [func [do][type? get/any 'do] :do] Cheers Ladislav