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char boundary

A byte position where one character ends and the next begins.

A char boundary is a byte index at the start of a char, or the string's length; str slicing panics unless both ends are char boundaries (is_char_boundary checks one).

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Examples

  • In "héllo", byte 2 falls inside é, so &s[0..2] panics while s.get(0..2) returns None.

See also

UTF-8 slice String
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