You seem to be confusing "1-to-1" mapping, and "identity function". While the identity function is a trivial "1-to-1" mapping, it's not true every "1-to-1" mapping is the identity function.

However, even side-stepping that, Juerd doesn't mean byte values map 1-to-1. The mapping is after decoding. For instance, the UTF-8 byte sequence 0x82 0xC3 decodes to C2. Which indeed does map to the C2 Unicode code point.

In reply to Re^5: How to reverse a (Unicode) string by JavaFan
in thread How to reverse a (Unicode) string by moritz

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