Maps

mut m := map[string]int{} // Only maps with string keys are allowed for now  
m['one'] = 1
println(m['one']) // ==> "1"  
println(m['bad_key']) // ==> "0"  
// TODO: implement a way to check if the key exists 
numbers := { // TODO: this syntax is not implemented yet  
    'one': 1,
    'two': 2,
}