createOpts
Returns a default-initialized CreateOpts.
Example:
// Build create options using UFCS chain and convert to low-level
auto co = createOpts()
.withSliceSize(0) // no slicing
.withAllowOverwrite(true)
.withWarnOverwrite(false)
.withSlicePerm("0644")
.toLow();
auto arc = Archive.create("/home/user", "/backups", "mybackup", "dar", co);