isAlpha

Syntax

isAlpha(X)

Arguments

X is a STRING scalar or vector.

Details

Return "true" if all characters in the string are alphabets. For STRING type NULLs, return "false".

Examples

isAlpha("hello");
// output
true

isAlpha("hello world");
// output
false

isAlpha("1And1");
// output
false

isAlpha(string());
// output
false