isDigit
Syntax
isDigit(X)
Arguments
X is a STRING scalar or vector.
Details
Return “true” if all characters in the string are numbers. For STRING type NULLs, return “false”.
Examples
$ isDigit("123456");
true
$ isDigit("1And1");
false
$ isDigit("10.05");
false
$ isDigit(string());
false