C++ 20 (2a) New Features - Composing Ranges

The video tutorial introduces the concept of ranges in programming, highlighting that as of December 2019, no compiler supports ranges, and the ranges V3 library is the only reference implementation. It demonstrates how to filter even numbers and double them using the Rangers library, and how to generate a sequence of numbers and compute their squares. The tutorial also explains function composition using the bitwise or operator, comparing it to traditional function composition methods.

What is the Ranges V3 library used for?

• To compile code faster

• To provide a reference implementation of ranges conforming to the standard

• To support outdated compilers

• To replace all existing libraries

Which function is used to filter even numbers in the Ranges library?

• transform

• filter

• reduce

• map

What transformation is applied to the filtered numbers in the example?

• They are squared

• They are halved

• They are doubled

• They are negated

What does the iota generator do in the Ranges library?

• Generates random numbers

• Generates numbers from zero to a specified limit

• Generates even numbers only

• Generates numbers in reverse order

How are function calls composed in the Ranges library?

• Using a colon

• Using a bitwise or operator

• Using a comma

• Using a semicolon