Struct kv::ValueBuf
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pub struct ValueBuf<T>(pub Vec<u8>, _);
A Value can be used to dynamically build values
Methods
impl<T: Encoding> ValueBuf<T>
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ⓘImportant traits for ValueBuf<T>pub fn empty() -> ValueBuf<T>
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Create an empty value buffer
ⓘImportant traits for ValueBuf<T>pub fn new(n: usize) -> ValueBuf<T>
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Create a new ValueBuf with the given size
pub fn inner(&self) -> Result<T, Error>
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Get inner value
Trait Implementations
impl<T: Debug> Debug for ValueBuf<T>
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl<T: Clone> Clone for ValueBuf<T>
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ⓘImportant traits for ValueBuf<T>fn clone(&self) -> ValueBuf<T>
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl<T: PartialEq> PartialEq for ValueBuf<T>
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fn eq(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests for !=
.
impl<T: PartialOrd> PartialOrd for ValueBuf<T>
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fn partial_cmp(&self, __arg_0: &ValueBuf<T>) -> Option<Ordering>
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This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &ValueBuf<T>) -> bool
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This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl<T: Encoding> AsRef<[u8]> for ValueBuf<T>
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impl<'a, T: Encoding> Value<'a> for ValueBuf<T>
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impl<T: Encoding> Read for ValueBuf<T>
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fn read(&mut self, buf: &mut [u8]) -> Result<usize>
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Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more
unsafe fn initializer(&self) -> Initializer
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read_initializer
)Determines if this Read
er can work with buffers of uninitialized memory. Read more
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0[src]
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
Read all bytes until EOF in this source, appending them to buf
. Read more
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0[src]
Read the exact number of bytes required to fill buf
. Read more
ⓘImportant traits for &'a mut Wfn by_ref(&mut self) -> &mut Self
1.0.0[src]
Creates a "by reference" adaptor for this instance of Read
. Read more
ⓘImportant traits for Bytes<R>fn bytes(self) -> Bytes<Self>
1.0.0[src]
Transforms this Read
instance to an [Iterator
] over its bytes. Read more
ⓘImportant traits for Chars<R>fn chars(self) -> Chars<Self>
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🔬 This is a nightly-only experimental API. (io
)
the semantics of a partial read/write of where errors happen is currently unclear and may change
Transforms this Read
instance to an [Iterator
] over [char
]s. Read more
ⓘImportant traits for Chain<T, U>fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
1.0.0[src]
R: Read,
Creates an adaptor which will chain this stream with another. Read more
ⓘImportant traits for Take<T>fn take(self, limit: u64) -> Take<Self>
1.0.0[src]
Creates an adaptor which will read at most limit
bytes from it. Read more
impl<T: Encoding> Write for ValueBuf<T>
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fn write(&mut self, buf: &[u8]) -> Result<usize>
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Write a buffer into this object, returning how many bytes were written. Read more
fn flush(&mut self) -> Result<()>
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Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
1.0.0[src]
Attempts to write an entire buffer into this write. Read more
fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
1.0.0[src]
Writes a formatted string into this writer, returning any error encountered. Read more
ⓘImportant traits for &'a mut Wfn by_ref(&mut self) -> &mut Self
1.0.0[src]
Creates a "by reference" adaptor for this instance of Write
. Read more