isDigit
Syntax
isDigit(X)
Details
Return "true" if all characters in the string are numbers. For null values of the
STRING type, return "false".
Note:
isDigit and
isNumeric are equivalent and
can be used interchangeably.Parameters
X is a STRING scalar or vector.
Returns
- When X is a scalar, it returns a Boolean scalar.
- When X is a vector, it returns a Boolean vector.
- When X is a table, it returns a table.
Examples
isDigit("123456");
// output: true
isDigit("1And1");
// output: false
isDigit("10.05");
// output: false
isDigit(string());
// output: false