Merge pull request #5 from lukeaiken/54145815_about_array_assignment_master

about array assignment master

[Delivers #54145815]
Gaining karma by learning about hashes

*Hash class

[#54145817]
Gaining karma by learning about hashes

*Hash size

[#54145817]
Gaining karma by learning about hashes

*Hashes

[#54145817]
Gaining karma by learning about hashes

*Ruby raises KeyError if fetch is called on a      
 hash for a key which doesn't exist

[#54145817]
Gaining karma by learning about hashes

*If hash is used as an argument it must be 
 placed in ()

[#54145817]
Gaining karma by learning about hashes

* Hash equality is not based on the order of
  key/value pairs

[#54145817]
Gaining karma by learning about hashes

* Hash keys are an array

[#54145817]
Gaining karma by learning about hashes

* Hash values are an array

[#54145817]
Gaining karma by learning about hashes

* Hash merges

[#54145817]
Gaining karma by learning about hashes

* Hash default values

[#54145817]
Gaining karma by learning about hashes

* Hash default values

[#54145817]
Gaining karma by learning about hashes

* Hash default values with block

[#54145817]