arrays_while_hashes_challenge.rb

# this is maybe the most important day in ruby fundamentals

animals = %w(Calf Duck Elephant Goat Lamb Lion Mule Dog)
animals[8] = "Puma"
animals.insert(4, "Joey")
p animals
animals.reverse! 
p animals
animals[2] = "Foal"
animals.push("Bear")
p animals

shopping = []
while shopping.length < 3
    puts "what item would you like to add to your shopping list"
    item = gets.chomp
    if item == "Broccoli"
        item = "Ice Cream"
    end  
    shopping << item 
end 

shopping.sort! 
p shopping

# different data types

# we touched on when to use case and when to use if/else 

# now looking at arrays and index

# sets with discrete math

# went through indexes and assigning a new value to an array with index

# went into the challenges that involved inserting and deleting parts from an array

animals = ["Calf", "Duck", "Elephant", "Goat", "Lamb", "Lion", "Mule", "Dog"] 
new_animals = []
index = 0
while index < animals.length 
    if animals[index] == "Mule"
        new_animals[index] = "Cat"
    else 
        new_animals[index] = animals[index]
        # here we are reassigning the value of animals to new_animals at the same index position 
    end 
    index += 1
    # we increment the index for each loop 
end 
p new_animals

# more explanation for using while loops with a counter incrementor

# people found this challenge a bit difficult

# the reassignment part is difficult, the syntax can take people a bit to get use to

fruits = ["apple", "banana", "orange", "banana"]
banana = []
index = 0
while index < fruits.length 
    if fruits[index] == "banana"
        banana.push(fruits[index])
    end
    index += 1  
end 

# using push in the same example just to reexplain how loops work 

# maybe some of the stuff was unnecessary in terms of the different ways you could do push syntax

# and also the array within an array variable

# just know reassigning and the bang !

# showing the different variations you can run with sort and chaining methods together 

# tested out sort using multiple arrays

person = {name: "John", height: "2m", weight: "70kgs"}
person[:occupation] = "developer"
person.delete(:weight)
# p person[:height]
person.each do |key, value|
    puts "#{key}: #{value}"
end