Picat Using Standard Modules 4

Question 1

What does `maps:put(Map, Key, Value, NewMap)` do?

Accepted Answer

Creates NewMap as Map with Key→Value added or updated

Answer

`maps:put/4` is a functional-style operation producing NewMap from Map with the Key→Value binding added or overwritten.

Question 2

In the Picat `lists` module, what does `flatten/2` do?

Accepted Answer

Converts a nested list into a flat list

Answer

`flatten/2` recursively removes nesting from a list, producing a flat single-level list.

Question 3

Which predicate in Picat's `io` module reads a single character from standard input?

Accepted Answer

get_char/1

Answer

`get_char/1` reads the next character from the current input stream and unifies it with its argument.

Question 4

What is the result of `sets:intersection([1,2,3,4], [2,4,6])` in Picat?

Accepted Answer

[2,4]

Answer

Set intersection returns only elements present in both lists, which are 2 and 4.

Question 5

Which `math` module function raises a number to a power in Picat?

Accepted Answer

pow/2

Answer

`pow/2` computes X to the power Y; the `**` infix operator also works for the same purpose.

Picat Practice Test