void main(){
Map<String, String> dictionary = {
'apple' : 'red',
'banana' : 'yellow',
'grape' : 'purple'
};
print(dictionary);
=>
{apple: red, banana: yellow, grape: purple}
Map<String, bool> isFruit = {
'apple' : true,
'computer' : false
};
print(isFruit);
=>
{apple: true, computer: false}
isFruit.addAll({
'cat' : false
});
print(isFruit);
=>
{apple: true, computer: false, cat: false}
print(isFruit['apple']);
=> true
isFruit['phone'] = false;
print(isFruit);
=>
{apple: true, computer: false, cat: false, phone: false}
isFruit['phone'] = true;
print(isFruit);
=>
{apple: true, computer: false, cat: false, phone: true}
isFruit.remove('cat');
print(isFruit);
=>
{apple: true, computer: false, phone: true}
print(isFruit.keys);
print(isFruit.values);
=>
(apple, computer, phone)
(true, false, true)
}