import std.stdio;
import dddb;

void main()
{
	
    kvdb db = new kvdb("test.db");
    

    // assign to hello key the value world 
    db.set("hello", "world");
    // read value for key hello
    string value = db.get("hello")
    // print value of hello key 
    writeln(value);
    // world
    
    
    // update hello key value from world to goodbye
    db.update("hello", "goodbye");
    // read value for key hello
    string value_updated = db.get("hello")
    // print value of hello key 
    writeln(value_updated);
    // goodbye
    
    // lookup if key exists
    bool havekey = db.havekey("hello");
    
    if (havekey)
       writeln("key exists")
    else{
       writeln("key not exists")
       }

    writeln(db.getsize());
    // db.getsize() return the database size in bytes
    
    
    // db.drop() delete database 
    // NOTE: all db data will be lost
    db.drop();
}