How to Iterate Over Strings in Dart Using ASCII and UTF-8 Encoding

Dart strings are not natively iterable and must be converted to a list or iterable class before character-by-character traversal. The dart:convert module provides ascii.encode() and utf8.encode() methods to handle this conversion. However, using utf8.encode() directly on a string splits multi-byte Unicode characters into individual bytes, producing fragmented output. A simpler workaround is to use the built-in String.split('') method, which correctly preserves each Unicode character as a single element in the resulting list. This approach is especially useful when working with non-ASCII characters such as Chinese glyphs or special symbols.