Page History

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• int: in SCALE integers can be encoded as fixed-width integer and compact integer. Compact integer itself has 4 modes. So generally we have 5 ways to serde integer (1 fixed-width + 4 modes of compact integers) 

  Code Block
  language bash
  { "type": "int", "mode": "CompactTwoByte" //possible values FixedWidth, CompactSingleByte, CompactTwoByte, CompactFourByte, CompactBigInteger, }

  
  

• bool: no tricks here 

  {
  

  
  

  Code Block
  language bash
  { "type": "bool"

  
  

  }

  
  

2. Built-in containers 

• [Option / Result / Vec / typle : basically we are interested in only inner values of the container

  
  

  Code Block
  language bash
  [

  
  {
  

  { "type": "Option",

  
  

  "item_type":

  {
  

  { "type" : "bool"

  
  }

  } },

  
  {
  

  { "type": "Result",

  
  

  "item_type":

  {
  

  { "type": "int",

  
  

  "mode": "CompactFourByte"

  
  }
  

  } },

  
  {
  

  { "type": "Vec

  ",
  

  ", "item_type": { "type": "bool" } }, { "type": "tuple", "items": [ { "type": "int", "mode": "CompactFourByte" }, { "type": "Option", "item_type":

  {
  

  { "type" : "bool"

  
  }
  }
  

  } } ] } ]

  
  

3. Custom containers 

• Structures

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