Function IsDigit() Foundation
Tests whether a character string begins with a digit.
IsDigit( <cString> ) --> lDigit
When the first character in <cString> is a digit (numeral), IsDigit() returns the value .T. (true), otherwise it returns .F. (false).
The character function IsDigit() tests whether the first character in a character string is a digit between "0" and "9". If the first character is any other character IsDigit() returns the value .F. (false).
The result depends on SET COLLATION and can be manipulated by LocaleConfigure() .
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