| Yorick Function ReferenceManipulating StringsYorick type string is a pointer to a 0-terminated array of
char.
A string with zero characters - "" - differs from a zero pointer
- string(0). A string variable s can be converted
to a pointer to a 1-D array of char, and such a pointerp can be converted back to a string:
p=pointer(s); s=string(p);
These conversions copy the characters, so you can't use the pointer p to
alter the characters of s.
 Given a string or an array of strings s:
 strlen(s )           number of characters in each element of s
strmatch(s, pat)     1 if pat occurs in s
 strmatch(s, pat, 1)  1 if pat occurs in s,
case insensitive
 strpart(s, m:n)      returns substring of s
 strtok(s, delims)    gets first token of s
 strtok(s)            gets first whitespace delimited token of
s
 The strtok function returns a 2-by-dimsof(s)
array of strings - the first token followed by the remainder of the string.
The token will be string(0) if no tokens were present; the remainder
of string will be string(0) if there are no characters after the
token.
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