Complete Modern C++ - Fold Expressions - Recap

What tool is used to visualize the expansion of weighted templates and fold expressions?

• Visual Studio

• GCC Compiler

• Eclipse IDE

• CPP Insights

When a variadic template sum function is invoked with zero arguments, what happens?

• It throws an error

• It calls a predefined sum function for zero arguments

• It returns the first argument

• It returns null

In a unary left fold expression, from which side are the elements reduced?

• From the right side

• From the middle

• From the left side

• From both sides simultaneously

What is the main difference between unary left folds and binary right folds?

• Unary left folds reduce from the right, binary right folds reduce from the left

• Unary left folds reduce from the left, binary right folds reduce from the right

• Both reduce from the left

• Both reduce from the right

Which of the following best describes a binary right fold?

• It reduces elements from both ends towards the center

• It reduces elements starting from the left

• It reduces elements starting from the right

• It does not reduce elements