Software Design Pattern Principles

In the context of software design patterns, what does the Singleton pattern ensure?

• A class can be subclassed only once
• A class has only one instance and provides a global point of access to it
• None of these
• A class can be instantiated only once per thread

Related MCQs

• To introduce students to the rhythmic use of locomotive skill; it would be more appropriate to design pattern that include hopping rather than skipping because?
• When using standardized, normal referenced assessment software to access physical education students, it is most important to ensure that :
• The category of software most appropriate for controlling the design and layout of complex documents like newsletters and brochures is _____?
• The 5 E's Model is most often associated with constructivist learning design design. This model is commonly used to design which one of the following?
• What is the pattern in the following number pairs: 2-8, 3-27, 4-28, 5-125? What is the result of 2^3 in this pattern?
• Number of proper subsets possessed by singleton is ______?
• System software acts as a bridge between the hardware and _______ software.
• Considering the following pattern 2² + 1 = 5, 3² + 1 = 10, 4² + 17, 5² + 1 = 26, . . . . . . ., the 8th line in the pattern is?
• The study of sound patterns ___.
• Which animals are known to have a polygonal patterns?