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* str-to-int
@ 2020-03-07  1:12 Emanuel Berg via Users list for the GNU Emacs text editor
  0 siblings, 0 replies; only message in thread
From: Emanuel Berg via Users list for the GNU Emacs text editor @ 2020-03-07  1:12 UTC (permalink / raw)
  To: help-gnu-emacs; +Cc: emacs-devel

;; better than string-to-number

(defun str-to-int (str)
  (if (string= str "0") 0
    (let ((res (string-to-number str)))
      (if (= res 0) nil (round res)) )))

;; (string-to-number "love and pain / it never stays the same") ; 0
;; ... ???
;;
;; (string-to-number "0") ; 0 ... well, correct! by all means

;; (str-to-int "give me all the storybook told me") ; nil
;; (str-to-int "the power and the glory till thy kingdom come") ; nil
;; (str-to-int "0")     ; 0
;; (str-to-int "1337")  ; 1337
;; (str-to-int "1.337") ; 1
;; (str-to-int "1.9")   ; 2
;; (str-to-int "0.1")   ; 0

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