Midterm
- When: Wednesday, July 9 at 9:10A to 10A
- Where: 145 Moffitt
- Bring: Your laptop w/ all the software installed/configured
- Recommended: Refcard
What to know
- filesystem hierarchy
- Bash
- ls, cd, pwd
- Git
- information: status, log
- virtous cycle: pull, add, commit, (pull,) push
- R
- ref card
- getting info
- data structures
- vector-centric
- indexing/subsetting
- recycling
- coercion
- functions
- R has extensive built-in functions
- vector-centric
- ?
to find options - scope: local is good
- return: explicit is better than implicit
- encapsulation: e.g., return multiple things w/ a list
- unit tests: "Testing shows the presence, not the absence of bugs." --- Edsger W. Dijkstra
- loading/saving data
- R format
- csv
- tab-delimited
- apply and friends
- clear, idiomatic R
- simplifies code
- Principle
- 7 plus or minus 2
- Divide et impera (Divide and conqueror)
- Learn the idiom
- language makes some things easier to express than others
Format
-
similar to labs and homeworks
$ cd
$ git pull $ cd midterm $ ls $ edit # MUST VERIFY NO EXECUTION HALTED $ git add -
NO communication with others
- You may use your computer to query search engines
- I wouldn't want to rely on this
- Do look up error messages, if you don't understand them
- I would try to rely on the reference card, slides, and ?
- Make little test cases
-
There will be several proctors
- You can ask anything
- We will answer questions about
- Any cheating will result in at least one of the following:
- 0 for the midterm
- F for the course
- Report to the Office of Student Conduct