static bool is_alphanumeric(const basis::astring &look_at, int len);
//!< returns true if the string "look_at" is all alphanumeric characters.
+ static bool is_alpha(char look_at);
+ //!< returns true if "look_at" is one of the alphabetical characters.
+ /*!< This includes a to z in either case. */
+ static bool is_alpha(const char *look_at, int len);
+ //!< returns true if the char ptr "look_at" is all alphabetical characters.
+ static bool is_alpha(const basis::astring &look_at, int len);
+ //!< returns true if the string "look_at" is all alphabetical characters.
+
static bool is_numeric(char look_at);
//!< returns true if "look_at" is a valid numerical character.
/*! this allows the '-' character for negative numbers also (but only for