Question

6. What is short circuit evaluation? Give an example.

7. Briefly explain how operator precedence works in APL.

8. What does times do in Ruby? What about each? What about upto? Use code snippets to explain your answers.

9. What is a functional side effect? Give an example in code.

10. What is an unconditional branch statement? If you were to define a new language, would you include this construct? Why or why not?

Answer 1

Answer 1:

short circuit evaluation is a method used by programming languages to reduce some logical calculations , this happens when the logical value of a statement is already known before the full execution of the statement.

Example:

if ( false && statement 1)

this if statement will return false value even before computing the value of statement 1 . since it is clear that all values will be false the compiler won't bother check the logical value of the statement 1.

My answering guidelines only allow me to post 1 answer in case of multiple questions , if you want all of them to be answered then please post them separately. Thank you for understanding!