I know...
it’s a bit late for week 3's blog but I never had the time till now so here
goes.
Week 3 has been the most productive
week for me so far because I was able to catch on quickly with this
week's lessons and had a triumphant time with the activities.
We learned about definition, or in other words, defining identifiers for
images, numbers, words, etc. I always find it fun to work with images because
it gives me the freedom to use an image of my choice which gives me a little
motivation boost to do the activities. Two of the many activities we had to do
for this week were:
1) Calculate the sum of 149 divided
by 7 with 83 times 15.
2) Append the first six characters
of "sixty-five" to the first two characters of "twenty"
And I have to admit, after several
failed attempts at doing this with no help what so ever, I felt like an
absolute genius when I got it right!
Solution for #1
> (+ (/ 149 7) (* 83 15))
>1266.285714
Solution for #2
> (define one
"sixtyfive")
> (define two
"twenty")
> (define first-six (substring
sixtyfive 0 6))
sixtyfive: this variable is not
defined
> (define first-six (substring
one 0 6))
> (define first-two (substring
two 0 2))
> (string-append first-six
first-two)
"sixtyftw"
First, I was absolutely lost
because I was so confused as to where the brackets and the math signs go but I
found A 'Dr.Racket Manual' online which showed me just how to write those math
functions. For question number two, however, I did not know what function
to use and was not able to find it on this online ’Dr.Racket Manual'. So,
I felt especially smart that I came up with the idea of creating place holders
or identifiers for each of the words that were to be used in the 'string
append' function and ever more so when I later found out that this
method wasn't even taught in class for 'string
append'. Yes, there is a simpler and much easier way but still I figured it
all out myself using only what was taught on the videos so I am going to keep
up the pride.
Later that week we had a tutorial
quiz on which a new function was created called 'sandwich' with its definitions
and we had to figure out what that function would do in a certain case. Since I
was familiar with this tactic (thanks to my ingenious moments
with the definitions activity) I was able to seamlessly ace that quiz!
