3.10 Racket ASCII

7.7

package: cur-lib

This library defines Racket tools for manipulating ASCII string. It will eventually be moved out of Cur; do not rely on it.

procedure
(ascii-char? c) → boolean?
c : char?

Returns #t when c is valid as a 7-bit ASCII character, and #f otherwise.

procedure
(ascii-string? str) → boolean?
str : string?

Returns #t when str contains only characters that are valid as a 7-bit ASCII character, and #f otherwise.

procedure
(byte->ascii-bit-vector b) → bit-vector?
b : byte?

Converts b into a bit-vector of a length 7, interpreted as a ASCII character; the sign bit of b is ignored.

procedure
(ascii-bit-vector->byte bv) → byte?
bv : bit-vector?

Converts a bv of length 7, interpreted as an ASCII character, into a byte.