Day1.md

R Fundamentals

Day 1

Duncan Temple Lang

Statistics & Graduate Studies.

Day1	Day2	Day3	Day4

• Goals

• R Session for Day 1

• REPL

• Evaluating literals 1, "text"

• Evaluating symbols pi

• Evaluating 1 + 2

• Everything is a function call

• Environments

• Search Path

  • finding symbols
  • finding functions
  • find(), get()

• Calling functions

  • Matching arguments to parameters
  • Scope within a function
    • environments/call frames
    • package environments
  • Lazy evaluation
  • pass by value ("everything" is a copy)
  • return value
  • on.exit()

• Call stack

• Assigning to a symbol

  • pi = 1
  • in which environment does the assignment take place

• attach(). See attach.R

Reading/Notes

• REPL
• Environments
• Evaluation
• Assignments and Variables
• Search Path
• Everything is a Call
• Function Calls