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Internet Message Format  |  1996-09-05  |  1KB
  1. Received: by cheltenham.cs.arizona.edu; Tue, 5 Mar 1996 12:30:39 MST
  2. Date: Tue, 5 Mar 1996 08:45:59 -0800
  3. From: kwalker@orville.premenos.com (Ken Walker)
  4. Message-Id: <199603051645.IAA13391@varda.premenos.com>
  5. To: icon-group@cs.arizona.edu
  6. Subject: Re: Production of an operator's left-hand operand
  7. Mime-Version: 1.0
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  9. Errors-To: icon-group-errors@cs.arizona.edu
  10. Status: O
  11.  
  12.  
  13. --19ee_282f-6c82_497f-5606_700c
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  17. X-Sun-Data-Type: text
  18.  
  19. > From: "Hamish Lawson" <H.Lawson@tees.ac.uk>
  20. > Date: Mon, 4 Mar 1996 20:58:38 GMT0BST
  21. > 
  22. > if I want to
  23. > do something like printing the value of e1 only if e2 succeeds; that
  24. > is, I cannot necessarily rewrite this as
  25. > 
  26. >    write(e2 & e1)
  27.  
  28. In the particular case of '&', you can replace it with mutual evaluation
  29. and write
  30.  
  31.      write(1(e1, e2))
  32.  
  33. However, there is nothing similar you can do with comparisons.
  34.  
  35. Ken Walker, kwalker@premenos.com
  36. Premenos Coporation, Concord, Ca. 94520
  37. --19ee_282f-6c82_497f-5606_700c--
  38.