// create a new Hash
// you can also omit the Type Parameter <Int>, because 
// it's inferred through the first set operation
var hash = new Hash<Int>(); 

hash.set("coffee", 1);
hash.set("tea", 2);
hash.set("beer", 3);
      
trace( hash.get("tea") ); // 2

trace( hash.get("juice") ); // null

trace( hash.exists("juice") ); // false

trace( hash.exists("coffee") ); // true

// iterate over the keys
for ( key in hash.keys() ) {
   trace( key ); // unsorted order of coffee, tea, beer
}

// iterate over the elements
for ( elem in hash) {
   trace( elem ); // unsorted order of 1,2,3
}

// get element count
trace( Lambda.count( hash ) ); // 3

// remove an element
hash.remove("coffee");

// get element count again
trace( Lambda.count( hash ) ); // 2