In article <87frwy3f48.fsf@nightsong.com>,   
   Paul Rubin   wrote:   
   >albert@spenarnc.xs4all.nl writes:   
   >> I always thought that closures are invented by lispers, because   
   >> in lisp you cannot write normal programs.   
   >   
   >Lisp didn't get them until fairly late in its evolution, I think.  Maybe   
   >old time Lispers here would know.  But I think Scheme was the first   
   >dialect that really made use of them.  Algol 60 its own version much   
   >earlier, in the form of call-by-name parameters.   
      
   Jenkin's device, call-by-name parameters. That was an obscure feature   
   got in algol60 their by accident.   
   That was a form of closure? Never had thought that.   
   Algol68 replaced it by allowing reference variables, kind of type clean   
   pointers, and passing references as parameters. That was understandable.   
      
   Groetjes Albert   
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