CSC 104 Slog-Week Five (Feb 4th - Feb 10th)

CSC 104 Slog-Week Five (Feb 4th - Feb 10th)

❤Something new learned in the class:

[Dr.Racket]

  ❀Values

here are some new terms that I learned this week, I recorded them down for the reviewing in the following days.

-(length menagerie)

-(first menagerie)

-(rest menagerie)

-(list-ref menagerie 0)

  We get whatever in position 0 (which is the first stuff in the list.)

-(range n1 n2 interval)

 We get a list of number beginning with n1 and ending up with (n2-interval) counting by the interval.

-(reverse menagerie)

-(Define-struct exhibit (name pic feet))

-(make-exhibit …)

-(exhibit-pic …)

-(exhibit-feet …)

So many stuff to memorize!

-(exhibit-name …)

-(map sqr num-list)

-(map sqrt num-list)

-(map string-length …)

-(map add5 num-list)

-(map scale-pingu scale-list)

-(image color-list im)

-(color-list ->bitmap

image -> color-list im))

-(Define (Bluer c)

   (make-color

    (color-red c)

    (color-green c)

    (quotient

      (+ 255 (color-blue c)) 2)

    (color-alpha c)))

    -(swap-red-blue c)

NOTE THAT

-The computer will respond these with (list … …)

-When we say (make-color 1 2 3 4)

1 responds to red intensity, 2 responds to green intensity, 3 responds to blue intensity, 4 responds to alpha.

❤ Challenges I met this week

  ❀The key points of programming during this week are not very difficult and we didn’t learn the history of computing this week. Anyway, this week went so far so good.

❤The test/quiz/assignment

We had a mid-term test this week. I prepared the history of computing for a long time because there are a lot of things to memorize, while it turned out that there weren’t lots of things about it in the test. Anyway it’s good to not have many problems about it so that I can get a good mark.  :)

  As for the programming part, I lost two points altogether. One was because I didn’t explain clearly about why it takes a computer a substantial amount of time for values as (Fibonacci 40) or (Fibonacci 50). The other is because I wrote “im” as “pic” which didn’t match the one offered in the questions.

Fibonacci

   For this test, I am glad that I didn’t hand in the test paper immediately after I finished the test, instead I checked for several times until the time was up. It helped me to correct some small mistakes and get a higher mark. In general, I feel like I did not bad but there is still a space for me to make progress. Hopefully I can get a higher mark next time.