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String Handling Libraries 4
CHARINT$ Function
Library:
Syntax:
Usage:
Summary:
Details:
Example:
Exceptions:
See also:
CHARS$ Function
Library:
Syntax:
Usage:
Summary:
Details:
Example:
Exceptions:
See also:
STRLIB.TRC
CHARINT$ (strex, strex)
LET intersection$ = CHARINT$ (a$, b$)
Returns the set of characters contained within the values of both a$ and b$.
The CHARINT$ function returns a string containing the intersection of the sets of
characters represented by the values of its arguments a$ and b$.
That is, the CHARINT$ function returns a string which contains one of each character
which appears in the values of both its arguments. The characters will be organized within
the resulting string in ascending order by their ASCII codes. Thus, uppercase letters will be
listed before all lowercase letters.
The following program:
LIBRARY "StrLib.trc"
DECLARE DEF CharInt$
LET a$ = "Hello, out there"
LET b$ = "aeiouy"
PRINT "*"; CharInt$ (a$, b$); "*"
END
produces the following output:
*eou*
None
CHARUNION$, CHARDIFF$, CHARS$, UNIQ$
STRLIB.TRC
CHARS$ (numex, numex)
LET set$ = CHARS$ (start, end)
Returns the set of characters whose ASCII codes range from the value of start to the value
of end.
The CHARS$ function returns a string containing the set of characters whose ASCII codes
range in value from start to end.
If the value of start is less than or equal to the value of end, then the characters within
the resulting string will be arranged in ascending order by ASCII codes. If the value of
start is greater than the value of end, the resulting string will be arranged in descending
order.
If either start or end has a value less than 0, a value of 0 will be used instead. Likewise, if
either has a value greater than 255, a value of 255 will be used instead.
The following program:
LIBRARY "StrLib.trc"
DECLARE DEF Chars$
PRINT Chars$ (33, 47)
END
produces the following output:
!"#$%&'()*+,-./
None
CHARINT$, CHARDIFF$, CHARUNION$, UNIQ$