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27
True BASIC Language System
PLUGSTR$ Function
Library:
Syntax:
Usage:
Summary:
Details:
Example:
Exceptions:
See also:
PUNCT$ Function
Library:
Syntax:
Usage:
Summary:
Details:
Example:
Exceptions:
See also:
REPCHAR$ Function
Library:
Syntax:
Usage:
Summary:
Details:
STRLIB.TRC
PLUGSTR$ (strex, strex, strex)
LET a$ = PLUGSTR$ (text$, old$, template$)
Returns the value of text$ with occurrences of the value of old$ replaced by the specified
template.
The PLUGSTR$ function replaces all occurrences of the value of old$ within text$. Each
occurrence of the value of old$ within text$ is replaced by the value of template$.
The PLUGSTR$ function differs from the REPSTR$ function in that the value of template$
is treated as a template. This means that each occurrence of the character combination “#1”
within the value of template$ will be replaced with the value of old$.
The following program:
LIBRARY "StrLib.trc"
DECLARE DEF PlugMix$
PRINT PlugMix$("x/x", "x", "(#1+#1)")
END
produces the following output:
(x+x)/(x+x)
None
PLUGMIX$, PLUGCHAR$, REPSTR$, DELSTR$
STRLIB.TRC
PUNCT$
LET set$ = PUNCT$
Returns the set of punctuation characters.
The PUNCT$ function returns a string containing the set of characters representing
punctuation, arranged in ascending order according to their ASCII codes. (For a table of the
ASCII codes and their corresponding characters, see Appendix A.)
That is, it returns the equivalent of the string constant:
“ !””#$%&’()*+,-./:;?@[\]^_`{|}˜”
where the pair of consecutive quotation marks results in the inclusion of a single quotation
mark.
Note that this function returns only those punctuation characters represented in the standard
ASCII character set. Depending upon the current operating environment there may be
additional punctuation characters available which are not represented within the results of
the PUNCT$ function.
None.
None
UPPER$, LOWER$, LETTERS$, DIGITS$, ALPHANUM$, CONTROL$
STRLIB.TRC
REPCHAR$ (strex, strex, strex)
LET a$ = REPCHAR$ (text$, oldchars$, new$)
Returns the value of text$ with all characters in oldchars$ replaced by the value of
new$.
The REPCHAR$ function maps the members of a character set to a single string. It returns
the value of text$ after having replaced any occurrences of characters appearing in the