Enum VirtualView 

pub enum VirtualView {
    LastAvailable,
    FirstMissing,
}

Which mapped data an unlimited virtual dataset’s extent covers — libhdf5’s H5D_vds_view_t, set with H5Pset_virtual_view and read back with H5Pget_virtual_view (H5Pdapl.c:1067, :1102).

A dataset access property: it is never stored in the file, so it says how this open reads a virtual dataset, not what its writer intended.

Variants

LastAvailable

H5D_VDS_LAST_AVAILABLE — the extent reaches the end of the last mapped block that has a source, so a gap before it reads as the fill value. libhdf5’s default (H5D_ACS_VDS_VIEW_DEF, H5Pdapl.c:62).

FirstMissing

H5D_VDS_FIRST_MISSING — the extent stops where the first missing mapped block begins, so no unmapped block is inside it.

Under this view libhdf5 ignores virtual_printf_gap entirely: H5D__virtual_init reads the gap property only for LastAvailable and forces it to 0 otherwise (H5Dvirtual.c:2182-2188).

Trait Implementations

impl Clone for VirtualView

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for VirtualView

impl Debug for VirtualView

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

Formats the value using the given formatter.

impl Default for VirtualView

fn default() -> Self

Returns the “default value” for a type.

impl Eq for VirtualView

impl PartialEq for VirtualView

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for VirtualView