DB.write

auto opt = new Options;
opt.create_if_missing = true;
auto db = new DB(opt, "/my/db/");
// Unsafe banking example
auto batch = new WriteBatch;

double joe = db.get_slice(Slice("Joe")).as!double;
double sally = db.get_slice(Slice("Sally")).as!double;

joe -= 10.00;
sally += 10.00;
if(joe < 0.0)
   joe -= 30.00; // overdraft fee

// submit the put in a single update
batch.put(Slice("Joe"), Slice(joe));
batch.put(Slice("Sally"), Slice(sally));
db.write(batch);