JavaScript: Closures And Statements Trivia Quiz
11 Questions
| Total Attempts: 45
Questions on closures, groovy truth, control structures, miscellaneous. Abc
Questions and Answers
- 1.(Fill in the blank) A closure acts like a _______ in the context of an iterative method.
- 2.Unlike a method a closure can only take one parameter.
- A.
True
- B.
False
- 3.When you return from a closure which is called by an iterative method, you stop the iteration process.
- A.
True
- B.
False
- 4.Groovy truth is identical to Java truth.
- A.
True
- B.
False
- 5.In Java the order of case branches within a switch statement is immaterial.
- A.
True
- B.
False
- 6.The Groovy for/in loop has the same syntax as Java's for/each loop.
- A.
True
- B.
False
- 7.The Groovy do statement is identical to Java's do statement.
- A.
True
- B.
False
- 8.Consider this Groovy method and its invocation: def foo() { def m = [:] m.a = 0 m.b = 1 } def val = foo() The variable val:
- A.
Is of type Map
- B.
Is undefined since foo has no return value
- C.
Is of type Integer since the last statement of foo is of type Integer
- 9.(Fill in the blank) The _____ operator invokes the compareTo method of a class that implements the Comparable interface.
- 10.Groovy does not have a way to test for reference equality.
- A.
True
- B.
False
- 11.What does this code do? List numbers = [1,2,3,4] println numbers.collect{it * 2}
- A.
Prints a list of the first four even numbers
- B.
Prints four even numbers each on its own line
- C.
Prints the variable numbers itself
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