Strings Seven Ways
summary
Covers seven ways to treat Swift strings with concrete techniques: use String views (utf8/utf16/scalars) to inspect bytes, rely on Swift 4.1 synthesized Equatable/Hashable and ExpressibleByStringLiteral to build typed identifiers, parse paths with URLComponents percent-encoding, extract entities with NLTokenizer and NLTagger and NSDataDetector, encode binary with Base64 to embed assets, and demonstrate emoji flag composition and Unicode facts (1991, 17 planes, ~1M code points).
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