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");
true

$ isAlpha("hello world");
false

$ isAlpha("1And1");
false

$ isAlpha(string());
false