Picat Data Structures and Types 2

Question 1

How do you create a new empty map in Picat?

Accepted Answer

new_map()

Answer

Picat provides the built-in `new_map()` function to create an empty hash map.

Question 2

What is the correct syntax to access element at index 2 of array A in Picat?

Accepted Answer

A[2]

Answer

Picat arrays use bracket notation `A[I]` for indexed access, with indexing starting at 1.

Question 3

Starting from which index do Picat arrays begin?

Accepted Answer

1

Answer

Picat arrays are 1-indexed by default, so the first element is at index 1.

Question 4

What does `to_array([a, b, c])` return in Picat?

Accepted Answer

{a, b, c}

Answer

`to_array/1` converts a list to a Picat array represented with curly-brace notation `{a, b, c}`.

Question 5

Which function retrieves a value from Picat map M using key K?

Accepted Answer

get(M, K)

Answer

`get(M, K)` is the built-in to retrieve the value associated with key K from map M.

Picat Practice Test