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rust: str: add BStr
type
Add the `BStr` type, which is a byte string without UTF-8 validity guarantee. It is simply an alias to `[u8]`, but has a more evident semantical meaning. Signed-off-by: Gary Guo <gary@garyguo.net> [Reworded, adapted for upstream and applied latest changes] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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use core::fmt;
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/// Byte string without UTF-8 validity guarantee.
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///
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/// `BStr` is simply an alias to `[u8]`, but has a more evident semantical meaning.
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pub type BStr = [u8];
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/// Allows formatting of [`fmt::Arguments`] into a raw buffer.
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///
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/// It does not fail if callers write past the end of the buffer so that they can calculate the
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