#[repr(i32)]
pub enum CompressionLevel { NoCompression, BestSpeed, BestCompression, UberCompression, DefaultLevel, DefaultCompression, }
Expand description

How much processing the compressor should do to compress the data. NoCompression and Bestspeed have special meanings, the other levels determine the number of checks for matches in the hash chains and whether to use lazy or greedy parsing.

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NoCompression

Don’t do any compression, only output uncompressed blocks.

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BestSpeed

Fast compression. Uses a special compression routine that is optimized for speed.

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BestCompression

Slow/high compression. Do a lot of checks to try to find good matches.

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UberCompression

Even more checks, can be very slow.

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DefaultLevel

Default compromise between speed and compression.

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DefaultCompression

Use the default compression level.

Trait Implementations§

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impl Clone for CompressionLevel

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fn clone(&self) -> CompressionLevel

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 CompressionLevel

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

Formats the value using the given formatter. Read more
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impl Hash for CompressionLevel

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq<CompressionLevel> for CompressionLevel

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fn eq(&self, other: &CompressionLevel) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for CompressionLevel

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impl Eq for CompressionLevel

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impl StructuralEq for CompressionLevel

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impl StructuralPartialEq for CompressionLevel

Auto Trait Implementations§

Blanket Implementations§

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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, 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.