pub trait DisplayHex: Copy + IsRef {
type Display: Display + Debug + LowerHex + UpperHex;
// Required method
fn as_hex(self) -> Self::Display;
// Provided methods
fn to_lower_hex_string(self) -> String { ... }
fn to_upper_hex_string(self) -> String { ... }
fn to_hex_string(self, case: Case) -> String { ... }
fn append_hex_to_string(self, case: Case, string: &mut String) { ... }
fn hex_reserve_suggestion(self) -> usize { ... }
}Expand description
Extension trait for types that can be displayed as hex.
Types that have a single, obvious text representation being hex should not implement this
trait and simply implement Display instead.
This trait should be generally implemented for references only. We would prefer to use GAT but
that is beyond our MSRV. As a lint we require the IsRef trait which is implemented for all
references.
Required Associated Types§
Required Methods§
Provided Methods§
Sourcefn to_lower_hex_string(self) -> String
Available on crate feature alloc only.
fn to_lower_hex_string(self) -> String
alloc only.Create a lower-hex-encoded string.
A shorthand for to_hex_string(Case::Lower), so that Case doesn’t need to be imported.
This may be faster than .display_hex().to_string() because it uses reserve_suggestion.
Sourcefn to_upper_hex_string(self) -> String
Available on crate feature alloc only.
fn to_upper_hex_string(self) -> String
alloc only.Create an upper-hex-encoded string.
A shorthand for to_hex_string(Case::Upper), so that Case doesn’t need to be imported.
This may be faster than .display_hex().to_string() because it uses reserve_suggestion.
Sourcefn to_hex_string(self, case: Case) -> String
Available on crate feature alloc only.
fn to_hex_string(self, case: Case) -> String
alloc only.Create a hex-encoded string.
This may be faster than .display_hex().to_string() because it uses reserve_suggestion.
Sourcefn append_hex_to_string(self, case: Case, string: &mut String)
Available on crate feature alloc only.
fn append_hex_to_string(self, case: Case, string: &mut String)
alloc only.Appends hex-encoded content to an existing String.
This may be faster than write!(string, "{:x}", self.as_hex()) because it uses
hex_reserve_sugggestion.
Sourcefn hex_reserve_suggestion(self) -> usize
fn hex_reserve_suggestion(self) -> usize
Hints how much bytes to reserve when creating a String.
Implementors that know the number of produced bytes upfront should override this. Defaults to 0.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementations on Foreign Types§
Source§impl<'a> DisplayHex for &'a Vec<u8>
Available on crate feature alloc only.
impl<'a> DisplayHex for &'a Vec<u8>
alloc only.