[Week 1] Part 1: Ruby Foundations

 

• ●  Primitive Data Types
  • ○  Booleans
  • ○  Integers
  • ○  Floats # 소수점 을 포함하는 숫자 
  • ○  String Manipulation # string 삽입 #{} 사용, 인덱스[]를 사용하여 extract substring ..etc
  • ○  Debugging
    • Reading the stack trace
    • Using debuggers correctly
    • Intro to scientific method
• ●  Methods, Iteration, Input/Output, Code Style
  • ○  ArrayDRY # Don't Repeat Yourself
  • ○  Blocks, Procs, and Lambdas
  • # Blocks do / end 로 끝나거나, {} 으로 묶인 것. 다양한 변수를 가질 수 있다. 
  • # Lambdas is a way to define a block & its parameters with some special syntax. (첫번째 코드블락 참고)
  • ○  Descriptive variable naming
  • ○  Scope

say_something = -> { puts "This is a lambda" }
say_something.call

# "This is a lambda"

times_two = ->(x) { x * 2 }
times_two.call(10)
# 20

참고: https://www.rubyguides.com/2016/02/ruby-procs-and-lambdas/