Struct MappedPermutation 

pub struct MappedPermutation(/* private fields */);

A Permutation backed by a big-endian mmapped file

Implementations

impl MappedPermutation

pub fn new_unchecked(perm: Mmap) -> Self

Creates a permutation

pub fn new(perm: Mmap) -> Result<Self>

Creates a permutation, or returns an error in case the permutation is incorrect

pub fn load_unchecked(path: &Path) -> Result<Self>

Loads a permutation from disk and returns IO errors if any.

This is an alias for Self::load_unchecked_with_flags with MmapFlags::RANDOM_ACCESS

pub fn load_unchecked_with_flags(path: &Path, flags: MmapFlags) -> Result<Self>

Loads a permutation from disk and returns IO errors if any.

pub fn load(num_nodes: usize, path: &Path) -> Result<Self>

Loads a permutation from disk, and returns errors in case of IO errors or incorrect permutations.

This is an alias for Self::load_with_flags with MmapFlags::RANDOM_ACCESS

pub fn load_with_flags( num_nodes: usize, path: &Path, flags: MmapFlags, ) -> Result<Self>

Loads a permutation from disk, and returns errors in case of IO errors or incorrect permutations.

Trait Implementations

impl Permutation for MappedPermutation

fn len(&self) -> usize

Returns the number of items

fn get(&self, old_node: usize) -> Option<usize>

Returns an item

unsafe fn get_unchecked(&self, old_node: usize) -> usize

Returns an item without checking it is within the bounds