When to use dump vs. generate vs. to_json and load vs. parse in Ruby's JSON lib? -


The claim to David 4dev is that an object has a JSON string in json library: JSON. Dump (object) JSON.generate (object) object.to_json

and two equal methods to change a JSON string: Object 

  JSON Loader (string) JSON.parse (string)   
 But seeing the source code, each of them looks pretty different, and there are some differences between them (e.g.,).  
 What are the differences between them?   
 
 
  TL; DR:    P> In general, use of  to_json  or equivalent  generate , and  parse  Please.  
 For some special use cases, you want the  dump  or  load , but it will  load  is unsafe to use.  
 
  Extended Explanation:   
  JSON :: Dump   vs   JSON :: generated   
 As part of the signature of its logic,  JSON :: generate  allows you to set options such as indented level and white location details . On the other hand,  :: Generate  inside, calls  JSON :: dump  with specific pre-set options, so you lose the ability to set it yourself Are there.  
 According to the docs, be the part of  JSON :: dump  of the  Marshall :: Dump  implementation plan is the main reason you explicitly : : You want to use Dump  to stream your JSON data (for example on a socket), because : dump  like you do the second argument Allows objects to pass. Unfortunately, the production of JSON data does not actually flow  as  is produced; It is composed collectively and JSON is completely built once. This makes an IO argument useful in trivial cases only.  
 The final difference between the two is that : dump  can also take a  boundary  it increases the argument when a certain nest victim Goes deeper.  
 
    #to_json   
  #to_json  objects as arguments , So the internal implementation is on one side,  JSON :: generated (foo, opts)  and  foo.to_json (opts)  are equivalent.  
 
  JSON :: load   vs   JSON :: parse   
 the same internal look To  :: load  call  :: parse  to internal  :: dump  calling  :: generating   :: Load , such as  :: dump , can also take an IO object, but again, the source is read at a time, so streaming is limited to minor matters. However, contrary to both  :: dump  /  :: generate  dual,  :: load  and  :: parse  Accept the option as part of the signature of their argument.  
 : Load  can also be passed, which will be called on every Ruby item to be parsed with data; It also comes with a warning that : Load  should be used with reliable data only, there is no such restriction  :: parse , and therefore  JSON :: parse  is the correct option for parsing untrusted data sources such as user input and files or streams with unknown content.

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