Which of the following is FALSE about a workbook?
A) It contains one or more worksheets.
B) It contains pages called worksheets.
C) It contains one or more worksheets with a series of cells.
D) It can contain only one worksheet.
D
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________ is a method reference for an instance method that should be called on a specific object. It creates a one-parameter lambda that invokes the instance method on the specified object—passing the lambda’s argument to the instance method—and returns the method’s result.
a. Math::sqrt b. System.out::println c. TreeMap::new d. String::toUpperCase
What setting is useful when you want to assign an absolute position to an object?
A) Lock position B) Lock anchor C) Lock location D) Lock object
One limitation of Ruby on Rails applications is that they are limited to a small subset of supported database management systems.
Answer the following statement true (T) or false (F)
Answer the following statements true (T) or false (F)
1) By default, instance variables are not initialized. 2) Instance variables are required to be explicitly initialized before they’re used in a program. 3) Making a class’s instance variables public and its methods private and accessing those instance variables only through the class’s methods and properties facilitates debugging, because problems with data manipulations are localized to the methods (and properties). 4) An attempt by a method that’s not a member of a particular class to access a private member of that class is a runtime error.