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