Dojo - Type Inference
Quiz
•
Computers
•
1st - 12th Grade
•
Practice Problem
•
Hard
Romain NOEL
Used 5+ times
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Lequel de ces chatons est le plus mignon ?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Est-ce que ça fonctionne?
var myVariable = "Pourquoi Mickey Mouse ?";
myVariable = 123;
Oui
Non, ça plante au runtime
Non, ça plante à la compilation
Parce que Mario Brosse
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le paradigme de l'inférence de type est une nouveauté de Java 10
Vrai
Faux
Le para-qué de l'infé-quoi?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le type de la variable "myList" ?
var myList = new ArrayList<>();
myList.add("Vive les chats !");
List<Object>
List<String>
Ça ne compile pas !
Moi je préfère les chiens...
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vrai ou Faux : L'utilisation de "var" est une bonne pratique
Vrai
Faux
Ça dépend...
La var-ice est un vilain défaut...
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Est-ce que ça compile ?
public void method(var input){/*...*/}
Oui
Uniquement si tous les appels de cette méthode sont faits avec le même type
Non
T'as cru que je compilais avec les yeux ou quoi ?
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Quelle(s) ligne(s) compile(nt) ? (plusieurs choix possibles)
Predicate<String> p1 = s -> s.isEmpty(); //1
var p2 = s -> s.isEmpty(); //2
var p3 = (String s) -> s.isEmpty(); //3
Predicate<String> p4 = (var s) -> s.isEmpty(); //4
1
2
3
4
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