Pairing

Questions 1 to 5 of 8

1. 1. In a pair, the navigator is the person who types the code while the driver watches and asks questions.

   True, because the navigator makes the changes and the driver only reads the planFalse, because the driver has the keyboard and types, and the navigator reads the code and points out problems
2. 2. Ana is the driver and Ravi is the navigator. Which of these is Ravi's job?

   Typing each line so that Ana can read the codeRunning the test file on his own computer while Ana waitsAsking what the next step is and pointing out a line that looks wrongChanging the goal of the function when he disagrees with it
3. 3. Two people at one keyboard split the work in half, so each person writes half the code and the task takes half the time.

   False, because both people spend their time on the same problem, and the benefit comes from two people checking each other's thinkingTrue, because the driver writes one half of the code while the navigator writes the other half
4. 4. The test loop uses the first version of make_slug. What does this code print? ``python def make_slug(title): return title.lower().replace(' ', '-') print(make_slug('a b')) ``

   a_ba ba-ba--b
5. 5. Ana says her function is correct for a b. Ravi expects a-b. What should the pair do before changing any code?

   Change the code to replace two dashes with one, since Ravi is the navigatorRun the test file again to see whether the result changesAgree on the expected value, write it as a test case, and ask whoever set the rule if they cannot agreeLet the driver decide, since the driver is the one who types