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README: Fixed code examples to start in the left-most column #330

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merged 2 commits into from
May 31, 2017
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README: Fixed code examples to start in the left-most column #330

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README: Fixed code examples to start in the left-most column
perlun May 31, 2017
db20046
Merge branch 'master' into patch-1
flori May 31, 2017
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38 changes: 21 additions & 17 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -179,14 +179,14 @@ should return a JSON object (a hash converted to JSON with `#to_json`) like
this (don't forget the `*a` for all the arguments):

```ruby
class Range
def to_json(*a)
{
'json_class' => self.class.name, # = 'Range'
'data' => [ first, last, exclude_end? ]
}.to_json(*a)
end
end
class Range
def to_json(*a)
{
'json_class' => self.class.name, # = 'Range'
'data' => [ first, last, exclude_end? ]
}.to_json(*a)
end
end
```

The hash key `json_class` is the class, that will be asked to deserialise the
Expand All @@ -200,20 +200,24 @@ called with the JSON object converted to a Ruby hash. So a range can
be deserialised by implementing `Range.json_create` like this:

```ruby
class Range
def self.json_create(o)
new(*o['data'])
end
end
class Range
def self.json_create(o)
new(*o['data'])
end
end
```

Now it possible to serialise/deserialise ranges as well:

```ruby
json = JSON.generate [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
# => "[1,2,{\"a\":3.141},false,true,null,{\"json_class\":\"Range\",\"data\":[4,10,false]}]"
JSON.parse json, :create_additions => true
# => [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
json = JSON.generate [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
# => "[1,2,{\"a\":3.141},false,true,null,{\"json_class\":\"Range\",\"data\":[4,10,false]}]"
JSON.parse json
# => [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
json = JSON.generate [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
# => "[1,2,{\"a\":3.141},false,true,null,{\"json_class\":\"Range\",\"data\":[4,10,false]}]"
JSON.parse json, :create_additions => true
# => [1, 2, {"a"=>3.141}, false, true, nil, 4..10]
```

`JSON.generate` always creates the shortest possible string representation of a
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