C++ Standard Template Library in Practice - Sequence Algorithms - equals

The video tutorial covers sequence algorithms using the equals function, focusing on binary predicates. It demonstrates how to use vectors and a student class to check equality, both by ID and by all fields. The tutorial explains the importance of having the same number of elements for equality and shows how to use Lambda functions for custom comparisons. The video concludes with a summary of Boolean results and a preview of upcoming topics on copying, moving, and removing elements.

What is a binary predicate in the context of sequence algorithms?

• A function that takes one value and returns a bool

• A function that takes two values and returns a bool

• A function that takes two values and returns an integer

• A function that takes one value and returns an integer

How can you check if two ranges are equal using the equals function?

• By checking if both ranges contain the same data type

• By ensuring both ranges have the same number of elements and equivalent elements at each position

• By comparing the first and last elements of both ranges

• By comparing the first element of one range with the last of the other

What is the result of comparing two vectors of 100 zeros using the equals function?

• True, because they are both empty

• True, because they have the same number of elements and values

• False, because they are not sorted

• False, because they are not unique

In the student object example, what determines if two students are considered equivalent?

• Their last names

• Their first names

• Their student IDs

• Their grades

What issue arises when comparing student objects by ID in the example?

• IDs are compared as strings

• IDs are not used in the comparison

• Some students have duplicate IDs

• All students have unique IDs

How can you compare all fields of student objects for equality?

• By using a function that checks only the IDs

• By using a Lambda function that checks all fields

• By comparing only the first names

• By using a built-in function that checks all fields

What is the outcome when comparing all fields of student objects in the example?

• False, because the comparison is not possible

• True, because all fields match

• False, because not all fields match

• True, because only IDs are compared