The HasIdentifier(s) command determines whether s contains characters that are valid as a character in an unquoted Maple identifier.

If s contains valid characters, HasIdentifier returns true. Otherwise, false is returned.

The HasIdentifier1(s) command determines whether s contains any characters that are valid as the first character of an unquoted Maple identifier.

If s has any characters valid as the first character, HasIdentifier1 returns true. Otherwise, false is returned.

The StringTools[HasIdentifier] and StringTools[HasIdentifier1] commands are thread-safe as of Maple 15.

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