hashes-irvin-xavier-leo.rb

#Create a variable called my_info and assign it to an empty hash using the .new method. (Expected output: {})
#my_info = Hash.new
#p my_info

#Add the following key-value pairs one at a time to the my_info variable: name: "John", age: 30, city: "San Diego".
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 30
#my_info[:city] = "San Diego"

#p my_info


#Log the value associated with the name key from the my_info variable.
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 30
#my_info[:city] = "San Diego"

#p my_info[:name]

#Log the value associated with the city key from the my_info variable.
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 30
#my_info[:city] = "San Diego"

#p my_info[:city]

#Update the value associated with the age key in the my_info variable to 35.
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 30
#my_info[:city] = "San Diego"

#p my_info[:age] = 35

#Create the code that will calculate and log the number of key-value pairs in the my_info variable. (Expected output: 3)
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 35
#my_info[:city] = "San Diego"

#p my_info.length


#Create a custom method called exists that takes the my_info variable and a key as arguments. Return true if the key exists in the hash, 
#otherwise, return false. Use the following method calls to test the functionality.
#def exists(hash, key)
    #hash.key?(key.to.sym)
#p exists(my_info, 'name')
#p exists(my_info, 'enjoys')
#p exists(my_info, 'city')
#end

#Create a custom method called numeric that takes the my_info variable and returns a hash with only the key-value pairs where the value is numeric.

#def numeric(info)
    #numeric_info = info.select { |_, value| value.is_a?(Numeric) }
    #return numeric_info
#end

#numeric_values = numeric(my_info)
#puts numeric_values


#Remove the key age and its associated value from the my_info variable.
#my_info = Hash.new

#my_info[:name] = "John"
#my_info[:age] = 35
#my_info[:city] = "San Diego"

#my_info.delete(:age)

#p my_info