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Is daf a leaf storage format?

Source: R/format_api.R
is_leaf.Rd

Returns TRUE for storage classes that own their on-disk or in-memory state directly (MemoryDaf, FilesDaf / FilesDafReadOnly, ZarrDaf / ZarrDafReadOnly, HttpDaf) and FALSE for wrappers (ReadOnlyChainDaf, WriteChainDaf, ContractDaf, ViewDaf). Used by reorder_axes() to reject non-leaf inputs because permuting indices is only meaningful on the underlying storage. Mirrors upstream Julia Readers.is_leaf.

Usage

is_leaf(daf)

Arguments

daf

A DafReader instance or an S7 class object.

Value

Logical scalar.

Details

Accepts either a DafReader instance or an S7 class object (so that is_leaf(MemoryDaf) mirrors Julia's class-level is_leaf(::Type{MemoryDaf})).

Examples

is_leaf(memory_daf())
#> [1] TRUE
is_leaf(MemoryDaf)
#> [1] TRUE