Mastering C++ Standard Library Features [Video] - Exceptions in 'constexpr' Functions

The video explores how exceptions and the throw statement interact with context functions. It outlines rules for using try-catch blocks and throw expressions, providing examples like the Foo function and factorial function. The video explains compile-time vs runtime behavior and offers guidelines for using throw in context functions. It concludes with a user ID check example and a preview of the next section on computations and types.

What is not allowed in context for functions according to the rules discussed?

• Return statements

• Try-catch blocks

• Variable declarations

• Throw expressions

What happens if a throw expression is encountered during compile time evaluation?

• The program will ignore the throw expression

• The program will run with a warning

• The program will fail to compile

• The program will compile successfully

In the factorial function example, what condition triggers a throw expression?

• When the input is negative

• When the input is zero

• When the input is positive

• When the input is even

What is the purpose of using throw expressions in context for functions?

• To improve code readability

• To handle errors at compile time

• To catch exceptions at runtime

• To optimize performance

What should be preferred over throw for checking preconditions in context for functions?

• Conditional operators

• Try-catch blocks

• Assert

• Return statements

What is a key benefit of using throw expressions during compile time evaluation?

• They allow for dynamic memory allocation

• They provide helpful compile error messages

• They improve runtime performance

• They enable multi-threading

What is a constant expression in the context of C++?

• An expression evaluated at compile time

• An expression that is always zero

• An expression evaluated at runtime

• An expression that changes during execution