testing different kind of key-value structures

1-test-struct-hash-open-struct-simple-hash-etc.rb

$struct = Struct.new(:name, :writing?).new("localhostdotdev", true)
$hash = Hash[name: "localhostdotdev", writing?: true]
$openstruct = OpenStruct.new(name: "localhostdotdev", writing?: true)
$hashwithindifferentaccess = HashWithIndifferentAccess[name: "localhostdotdev", writing?: true]
$yourcustomclass = "<insert your class here>"
$simplehash = SimpleHash[name: "localhostdotdev", writing?: true]

def try(code)
  puts code
  p eval(code, binding)
rescue Exception => e
  puts e.message
end

def banner(message)
  puts
  puts "=== #{message} ==="
  puts
end

banner ".name"

try('$struct.name')
try('$hash.name')
try('$openstruct.name')
try('$hashwithindifferentaccess.name')
try('$simplehash.name')

banner ".keys"

try('$struct.keys')
try('$hash.keys')
try('$openstruct.keys')
try('$hashwithindifferentaccess.keys')
try('$simplehash.keys')

banner "[:name]"

try('$struct[:name]')
try('$hash[:name]')
try('$openstruct[:name]')
try('$hashwithindifferentaccess[:name]')
try('$simplehash[:name]')

banner '["name"]'

try('$struct["name"]')
try('$hash["name"]')
try('$openstruct["name"]')
try('$hashwithindifferentaccess["name"]')
try('$simplehash["name"]')

banner ".names"

try('$struct.names')
try('$hash.names')
try('$openstruct.names')
try('$hashwithindifferentaccess.names')
try('$simplehash.names')

banner ".to_json"

try('$struct.to_json')
try('$hash.to_json')
try('$openstruct.to_json')
try('$hashwithindifferentaccess.to_json')
try('$simplehash.to_json')

2-result.txt

=== .name ===

$struct.name
"localhostdotdev"
$hash.name
undefined method `name' for {:name=>"localhostdotdev", :writing?=>true}:Hash
$openstruct.name
"localhostdotdev"
$hashwithindifferentaccess.name
undefined method `name' for {"name"=>"localhostdotdev", "writing?"=>true}:ActiveSupport::HashWithIndifferentAccess
$simplehash.name
"localhostdotdev"

=== .keys ===

$struct.keys
undefined method `keys' for #<struct name="localhostdotdev", :writing?=true>
$hash.keys
[:name, :writing?]
$openstruct.keys
nil
$hashwithindifferentaccess.keys
["name", "writing?"]
$simplehash.keys
["name", "writing?"]

=== [:name] ===

$struct[:name]
"localhostdotdev"
$hash[:name]
"localhostdotdev"
$openstruct[:name]
"localhostdotdev"
$hashwithindifferentaccess[:name]
"localhostdotdev"
$simplehash[:name]
"localhostdotdev"

=== ["name"] ===

$struct["name"]
"localhostdotdev"
$hash["name"]
nil
$openstruct["name"]
"localhostdotdev"
$hashwithindifferentaccess["name"]
"localhostdotdev"
$simplehash["name"]
"localhostdotdev"

=== .names ===

$struct.names
undefined method `names' for #<struct name="localhostdotdev", :writing?=true>
Did you mean?  name
               name=
$hash.names
undefined method `names' for {:name=>"localhostdotdev", :writing?=>true}:Hash
$openstruct.names
nil
$hashwithindifferentaccess.names
undefined method `names' for {"name"=>"localhostdotdev", "writing?"=>true}:ActiveSupport::HashWithIndifferentAccess
$simplehash.names
undefined method `names' for {"name"=>"localhostdotdev", "writing?"=>true}:SimpleHash
Did you mean?  name

=== .to_json ===

$struct.to_json
"{\"name\":\"localhostdotdev\",\"writing?\":true}"
$hash.to_json
"{\"name\":\"localhostdotdev\",\"writing?\":true}"
$openstruct.to_json
"{\"table\":{\"name\":\"localhostdotdev\",\"writing?\":true}}"
$hashwithindifferentaccess.to_json
"{\"name\":\"localhostdotdev\",\"writing?\":true}"
$simplehash.to_json
"{\"name\":\"localhostdotdev\",\"writing?\":true}"

3-results-table.md

	Struct	Hash	OpenStruct	HashWithIndifferentAccess	[your custom class]	SimpleHash
new({ a: 1 }) / [a: 1]	✗	✓	✓	✓	?	✓
.name / .writing?	✓	✗	✓	✗	?	✓
[:name]	✓	✓	✓	✓	?	✓
[:name] / ["name"]	✓	✗	✓	✓	?	✓
.keys / .values / etc.	✗	✓	✗	✓	?	✓
NoMethodError	✓	✓	✗	✓	?	✓
did you mean	✓	✗	✗	✗	?	✓
.to_json	✓	✓	✗	✓	?	✓
.emails.first.domain	✗	✗	✗	✗	?	✓