char (ANSI and GNU Common Lisp Document)

Next: string, Previous: simple-string-p, Up: Strings Dictionary

#### 16.2.6 char, schar [Accessor]

`char` string index ⇒ character

`schar` string index ⇒ character

(setf (`char` string index) new-character)
(setf (`schar` string index) new-character)

#### Arguments and Values::

string—for char, a string; for schar, a simple string.

index—a valid array index for the string.

character, new-character—a character.

#### Description::

char and schar access the element of string specified by index.

char ignores fill pointers when accessing elements.

#### Examples::

     (setq my-simple-string (make-string 6 :initial-element #\A)) ⇒  "AAAAAA"
     (schar my-simple-string 4) ⇒  #\A
     (setf (schar my-simple-string 4) #\B) ⇒  #\B
     my-simple-string ⇒  "AAAABA"
     (setq my-filled-string
           (make-array 6 :element-type 'character
                         :fill-pointer 5
                         :initial-contents my-simple-string))
    ⇒  "AAAAB"
     (char my-filled-string 4) ⇒  #\B
     (char my-filled-string 5) ⇒  #\A
     (setf (char my-filled-string 3) #\C) ⇒  #\C
     (setf (char my-filled-string 5) #\D) ⇒  #\D
     (setf (fill-pointer my-filled-string) 6) ⇒  6
     my-filled-string ⇒  "AAACBD"

#### See Also::

aref , elt ,

Compiler Terminology

#### Notes::

     (char s j) ≡ (aref (the string s) j)