Alternativas ao If (Unless, Provided That, As Long As, In Case)

Alternativas ao If (Unless, Provided That, As Long As, In Case) — Exercise 2

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Alternativas ao If (Unless, Provided That, As Long As, In Case) — Exercise 2

Practice English grammar topic Alternativas ao If (Unless, Provided That, As Long As, In Case) with 10 multiple-choice questions. Answer at least 70% correctly to complete the test.

Outras conjunções condicionais: unless (a menos que), provided that (desde que), as long as (contanto que), in case (caso).

B2 · Intermédio Superior TOEIC 605–780 IELTS 5,5–6,5 Orações e Condicionais
10 questions Nota mínima: 70% Test 2

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  1. 1

    Which of the following is NOT a keyword typically associated with a `switch` statement?

  2. 2

    In JavaScript, if you have `const user = null; const username = user?.name ?? 'Guest';`, what will `username` be?

  3. 3

    A function `processInput(data)` should immediately stop and return an error if `data` is null. Which alternative to `if-else` is best for this?

  4. 4

    To manage different actions based on user input (e.g., 'add', 'edit', 'delete'), you store functions in a dictionary/map where keys are the input strings and values are the corresponding functions. What is this technique called?

  5. 5

    Which operator provides a concise way to write conditional expressions, often replacing simple if-else statements?

  6. 6

    To provide a default empty object for a variable `options` if it's null or undefined, which operator is most suitable?

  7. 7

    You are building a system that needs to retrieve configuration values (e.g., `API_KEY`, `DATABASE_URL`) from environment variables. If an environment variable is not set, you want to use a default value. Which operator is ideal for this, especially if an empty string is a valid configuration?

  8. 8

    You are building a GUI application where various menu items (e.g., 'Save', 'Open', 'Copy') need to perform different actions when clicked. Instead of using a large `if-else if` block to check which item was clicked and then execute its logic, you encapsulate each action into a separate object. Which design pattern does this describe?

  9. 9

    Which of the following is a common use case for the ternary operator?

  10. 10

    You want to log a message only if a `debugMode` flag is true. Which short-circuiting operator can achieve this concisely?

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