Comments on: String building in Lisp http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/ mostly tech, mostly rants Thu, 20 Nov 2008 16:57:36 +0000 http://wordpress.org/?v=2.6.3 By: foobar http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5679 foobar Thu, 27 Dec 2007 00:47:06 +0000 http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5679 should be: (with-output-to-string (*standard-output*) (princ “foo”) (princ 19.3) (princ “bar”)) or even: (with-output-to-string (*standard-output*) (mapc #'princ '("foo" 19.3 "bar"))) should be:

(with-output-to-string (*standard-output*)
(princ “foo”)
(princ 19.3)
(princ “bar”))

or even:

(with-output-to-string (*standard-output*) (mapc #’princ ‘(”foo” 19.3 “bar”)))

]]> By: foobar http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5675 foobar Thu, 27 Dec 2007 00:25:12 +0000 http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5675 (concatenate 'string "foo" (princ-to-string 19.3) "bar") (with-output-to-string (*standard-output*) (princ "foo") (princ-to-string 19.3) (princ "bar")) Note that WITH-OUTPUT-TO-STRING also takes optionally a preallocated (even adjusting with fill-pointer) string - so you can reduce consing by reusing a string buffer. (concatenate ’string “foo” (princ-to-string 19.3) “bar”)

(with-output-to-string (*standard-output*)
(princ “foo”)
(princ-to-string 19.3)
(princ “bar”))

Note that WITH-OUTPUT-TO-STRING also takes optionally a preallocated (even adjusting with fill-pointer) string - so you can reduce consing by reusing a string buffer.

]]> By: ryan http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5672 ryan Wed, 26 Dec 2007 21:22:42 +0000 http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5672 Zach: updated to include *PRINT-PRETTY* settings. That is quite a difference. Zach: updated to include *PRINT-PRETTY* settings. That is quite a difference.

]]> By: Zach Beane http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5670 Zach Beane Wed, 26 Dec 2007 20:38:55 +0000 http://ryepup.unwashedmeme.com/blog/2007/12/26/string-building-comparison-with-lisp/#comment-5670 FORMAT's performance characteristics change dramatically if *PRINT-PRETTY* is nil. Check it out. FORMAT’s performance characteristics change dramatically if *PRINT-PRETTY* is nil. Check it out.

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