
Haskell 1
Quiz
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Computers
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University
•
Practice Problem
•
Medium
Олександра Радзієвська
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7 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Оберіть правильний варіант виклику функції min з двома параметрами
min(3, 4)
min 3, 4
min 3 4
min 3 | 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Яке твердження НЕ є правдивим?
Haskell is a purely functional programming language.
Haskell is an imperative programming language.
Haskell is lazy.
In Haskell you can’t change
variable value.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Оберіть некоректний вираз
[1,2] ++ [3,4]
'A':" SMALL CAT"
[2]:[3,5]
"hello" ++ ['a', 'b']2 : []
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Як створити безкінченний список натуральних чисел?
(1:)[1..]
(1,2..)*
[1~]
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Як отримати значення першого елементу зі списку myList?
head myList
take 1 myList
fst myList
myList[0]
myList[1]
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Якою командою можна отримати підсписок списку, який буде містити всі елементи крім першого?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чи обов'язково команда if має мати else?
Так, обов'язково
Не обов'язково, якщо є elseIf
У Хаскелі немає else, лише otherwise
Взагалі не обов'язково
Answer explanation
Since every function has to return something, this implies that every if has to have a corresponding else. Otherwise, you could write a function that has a return value when a certain condition is met but doesn’t have one when that condition isn’t met! Briefly: Haskell’s if is an expression that must return a value, and not a statement.
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