Verify
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Description
Determine whether each character of a string is present in another string.
Syntax
n = Verify([Start,] MainString, MatchString)
Returns
Number
Returns zero if each character in MainString is present in MatchString.
If not, it returns the position of the first non-matching character in MainString.
Parameters
Name |
Type |
Optional |
Meaning |
Start |
Number |
Yes |
Optional starting position inside MainString to start checking from. If Start evaluates to a position outside of the string on either side, or if Start is zero, VERIFY returns zero |
MainString |
String |
No |
String to test |
MatchString |
String |
No |
String containing allowed chars |
Remarks
Restrictions
Verify is case sensitive
See also
Examples
'---Returns 4 since "." is not in "0123456789"
x = VERIFY("123.65,22.5", "0123456789")
'---Returns 7 since 5 starts it past the first non-digit ("." at position 4)
x = VERIFY(5,"123.65,22.5", "0123456789")
'---Returns 0 since all chars in MainString are present in MatchString
x = VERIFY("123.65,22.5", ".,0123456789")