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3 years ago

1. If an F# function has type 'a -> 'b when 'a : comparison, which of the following is not a legal type for it? Select one:

Computers and Technology

1 answer:

Stella [2.4K]3 years ago

7 0

Answer:

B. string -> (int -> int)

Explanation:

We are going to perform comparison operations '->'. It is important to notice that the comparison operation gives us a bool value (True or False) and the comparison operation is legal if and only if the data types to be compared are the same.

Example:

int(4)->int(5) False

int(4)->int(4) True

int(4)->string(4) Error, data types don't match

For this reason:

A. Is legal because float -> float evaluates to True, True is a boolean value and bool -> bool is legal because both are the same data type.

B. Is illegal because int -> int evaluates to True, True is a boolean value and string is not a boolean (string -> bool).

C. Is legal because int is the same type than int.

D. Is legal because the list is the same type than list regardless it's content.

Note:

The operations inside parentheses are evaluated first.

List is a type by itself regardless of its content.

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2 years ago

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Oksi-84 [34.3K]

Answer:

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3 years ago

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barxatty [35]

Answer:

#include <string>

#include <iostream>

using namespace std;

int main() {

string userInput;

getline(cin, userInput);

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int isPresent = userInput.find("darn");

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else

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The proposed solution added an else statement to the code

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3 years ago

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natka813 [3]

Answer:

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Explanation:

Hope it helps you!

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3 years ago