iterate-devel

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271 discussions

Re: [iterate-devel] Problem with DEFCLAUSE-DRIVER
by Hoehle, Joerg-Cyril 21 Mar '08

21 Mar '08

Hi, Marco Antoniotti wrote: (defclause-driver (FOR var OVER enum) `(progn (with ,e = ,enum) (,kwd ,var next ... defclause-driver is NOT the form you need when you want to supply code which must be macro-expanded in turn. >I feel there is a but either in the manual or in the code. Which is >which? Which part of the manual (or examples) lead you to believe you need defclause-driver? Do you have suggestions for improving the manual? Regards, Jorg Hohle.

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[iterate-devel] Problem with DEFCLAUSE-DRIVER
by Marco Antoniotti 14 Mar '08

14 Mar '08

Hi I am trying again to extend ENUMERATIONs with ITERATE. Here is my try ;;;; -*- Mode: Lisp -*- ;;;; iterate-enumeration.lisp -- ;;;; ITERATE extension for ENUMERATIONs. (in-package "ITERATE") (defclause-driver (FOR var OVER enum) (let ((e (gensym "ENUM-")) (kwd (if generate 'generate 'for)) ) `(progn (with ,e = ,enum) (,kwd ,var next (if (enum:has-more-elements-p ,e) (enum:next ,e) (terminate)))))) ;;;; end of file -- iterate-enumeration.lisp -- However I get this error when I try it. =========== CL-USER 31 > (iter (for x over (enum:range 3 8)) (collect (1+ x))) Error: Undefined operator WITH in form (WITH #:ENUM-7002 = (CL.EXTENSIONS.ENUMERATIONS:RANGE 3 8)). 1 (continue) Try invoking WITH again. 2 Return some values from the form (WITH #:ENUM-7002 = (CL.EXTENSIONS.ENUMERATIONS:RANGE 3 8)). 3 Try invoking something other than WITH with the same arguments. 4 Set the symbol-function of WITH to another function. 5 Set the macro-function of WITH to another function. 6 (abort) Return to level 0. 7 Return to top loop level 0. Type :b for backtrace, :c <option number> to proceed, or :? for other options =========== And I get the following, seemingly bogus macroexpansion. =========== CL-USER 38 > (pprint (macroexpand-1 '(iter (for x over (enum:range 3 8)) (collect (1+ x))))) (LET* ((#:RESULT57 NIL) (#:END-POINTER58 NIL) (#:TEMP59 NIL)) (BLOCK NIL (TAGBODY LOOP-TOP-NIL PROGN (WITH #:ENUM-7006 = (CL.EXTENSIONS.ENUMERATIONS:RANGE 3 8)) (FOR X NEXT (IF (CL.EXTENSIONS.ENUMERATIONS:HAS-MORE-ELEMENTS-P #:ENUM-7006) (CL.EXTENSIONS.ENUMERATIONS:NEXT #:ENUM-7006) (TERMINATE))) (PROGN (SETQ #:TEMP59 (LIST (1+ X))) (SETQ #:END-POINTER58 (IF #:RESULT57 (SETF (CDR #:END- POINTER58) #:TEMP59) (SETQ #:RESULT57 #:TEMP59))) #:RESULT57) (GO LOOP-TOP-NIL)) #:RESULT57)) =========== I feel there is a but either in the manual or in the code. Which is which? Cheers -- Marco Antoniotti

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[iterate-devel] Can you afford to lose 300, 000 potential customers per year ?
by Instant＠common-lisp.net 18 Jan '08

18 Jan '08

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[iterate-devel] Can you afford to lose 300, 000 potential customers per year ?
by Instant＠common-lisp.net 10 Jan '08

10 Jan '08

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[iterate-devel] Receive hundreds of targeted hits to your website every day from the links in the feeds!
by Feed＠common-lisp.net 22 Nov '07

22 Nov '07

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[iterate-devel] Let's Share Favorites on StumbleUpon
by dabittweiler＠gmail.com 09 Nov '07

09 Nov '07

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[iterate-devel] How would you like an extra $500 - $1000 a week with 15 minutes of your time ?
by Google＠common-lisp.net 05 Nov '07

05 Nov '07

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[iterate-devel] How would You like to divert 1000s of fresh new visitors daily.
by Instant＠common-lisp.net 04 Nov '07

04 Nov '07

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[iterate-devel] Automatically create thousands of links to your website
by BlogBlaster＠common-lisp.net 02 Nov '07

02 Nov '07

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[iterate-devel] How to get free quality visitors to your website?
by Hit-Booster＠common-lisp.net 01 Nov '07

01 Nov '07

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