Struct CompressionLevel 

pub struct CompressionLevel(pub u32);

gzip compression level used when writing.

The level dominates the cost of writing compressed output — far more than parsing does. On an 81 MiB FASTQ, one run took 2.8 s at level 1 and 18.6 s at level 6, for output of 42.2 MB versus 38.9 MB: 6.5× the time to save 8%. CompressionLevel::FAST is almost always the right choice for files that another pipeline stage will immediately read back.

Tuple Fields

0: u32

Implementations

impl CompressionLevel

pub const NONE: CompressionLevel

No compression, fastest. Still a valid gzip stream.

pub const FAST: CompressionLevel

Fast, slightly larger output — what pipeline intermediates want.

pub const DEFAULT: CompressionLevel

gzip’s own default, and this crate’s, for consistency with other tools.

pub const BEST: CompressionLevel

Smallest output, slowest — for data you write once and archive.

Trait Implementations

impl Clone for CompressionLevel

fn clone(&self) -> CompressionLevel

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CompressionLevel

impl Debug for CompressionLevel

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

Formats the value using the given formatter.

impl Default for CompressionLevel

fn default() -> Self

Returns the “default value” for a type.

impl Eq for CompressionLevel

impl PartialEq for CompressionLevel

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CompressionLevel