The HasAlphaNumeric(s) command determines whether s has alphanumeric characters. That is, whether it has either alphabetic or decimal digit characters. A character is alphabetic if it is either upper or lowercase. A character is a decimal digit if it is one of the following:

If s has at least one alphanumeric character, HasAlphaNumeric returns true. Otherwise, false is returned.

All of the StringTools package commands treat strings as (null-terminated) sequences of $8$-bit (ASCII) characters.  Thus, there is no support for multibyte character encodings, such as unicode encodings.

The StringTools[HasAlphaNumeric] command is thread-safe as of Maple 15.

For more information on thread safety, see index/threadsafe.

$\mathrm{with}\left(\mathrm{StringTools}\right)\:$

$\mathrm{HasAlphaNumeric}\left(s\right)$

$\mathrm{false}$

$\mathrm{HasAlphaNumeric}\left(s\right)$

$\mathrm{true}$

$\mathrm{HasAlphaNumeric}\left(\mathrm{Random}\left(1000\right)\right)$

$\mathrm{true}$