withReference

fnIncrOpts withReference(IncrOpts io, string path, string base, string ext = "dar", uint minDigits = 0) @safe @nogc pure nothrow

Sets the reference archive coordinates.

`path`	directory containing the reference archive slices
`base`	base name of the reference archive
`ext`	slice extension (default: "dar")
`minDigits`	minimum digits for slice numbering (default: 0)

fnIncrOpts withReference(IncrOpts io, Archive arc) @safe

Sets the reference archive from an existing Archive instance.

arc opened Archive to use as reference