Nyquist / XLISP 2.0 -
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char-lessp
Type: |
- |
predicate function (subr) |
Source: |
- |
xlstr.c |
Syntax
- (char-lessp char1 charN ... )
- char1 - a character expression
charN - character expression[s] to compare
returns - T
if the characters are of monotonically increasing
ASCII value,
NIL otherwise
Note: case is not significant with this function
Description
The 'char-lessp' function tests if all the character
arguments are monotonically increasing.
T is returned if the arguments
are of increasing ASCII value,
NIL otherwise. In the case of two
arguments, this has the effect of testing if 'char1' is less than 'char2'.
This test is case insensitive, the character '#\a' is
considered to be the same ASCII value
as the character '#\A'.
Examples
(char-lessp #\a #\b) => T
(char-lessp #\b #\a) => NIL
(char-lessp #\a #\b #\c) => T
(char-lessp #\a #\a) => NIL
(char-lessp #\a #\b #\b) => NIL
(char-lessp #\A #\a) => NIL
(char-lessp #\a #\A) => NIL
See also:
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Nyquist / XLISP 2.0 -
Contents |
Tutorials |
Examples |
Reference