Struct hyper::body::SizeHint

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pub struct SizeHint {
    lower: u64,
    upper: Option<u64>,
}
Expand description

A Body size hint

The default implementation returns:

  • 0 for lower
  • None for upper.

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§lower: u64§upper: Option<u64>

Implementations§

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impl SizeHint

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pub fn new() -> SizeHint

Returns a new SizeHint with default values

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pub fn with_exact(value: u64) -> SizeHint

Returns a new SizeHint with both upper and lower bounds set to the given value.

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pub fn lower(&self) -> u64

Returns the lower bound of data that the Body will yield before completing.

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pub fn set_lower(&mut self, value: u64)

Set the value of the lower hint.

Panics

The function panics if value is greater than upper.

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pub fn upper(&self) -> Option<u64>

Returns the upper bound of data the Body will yield before completing, or None if the value is unknown.

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pub fn set_upper(&mut self, value: u64)

Set the value of the upper hint value.

Panics

This function panics if value is less than lower.

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pub fn exact(&self) -> Option<u64>

Returns the exact size of data that will be yielded if the lower and upper bounds are equal.

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pub fn set_exact(&mut self, value: u64)

Set the value of the lower and upper bounds to exactly the same.

Trait Implementations§

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impl Clone for SizeHint

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fn clone(&self) -> SizeHint

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SizeHint

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for SizeHint

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fn default() -> SizeHint

Returns the “default value” for a type. Read more

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more