Data Types

Storage Types

Dipc provides template types to provide data persistence to the dipperin chain.

• Uint8
• Int8
• Uint16
• Int16
• Uint
• Int
• Uint64
• Int64
• String
• Vector
• Set
• Map
• Array
• Tuple
• Deque

template types to provide data persistence to the dipperin chain.

Storage types usage example:

// Example one Map uses:
// Define the storage field name
char bal[] = "balance";
// Storage field name   key type    value type
Map<     bal,           std::string, uint64_t >  balance;

// Example two String uses:
// Define the storage field name
char name[] = "contract_name";
//  Storage field name   
String<name> contract_name;

In the contract, the field defined by the storage type is used and its value is automatically stored on the dipperin chain when the contract is created.

Fundamental Types

Dipc supports all basic types of C++, standard library types and their arithmetic operations And the types defined in the dipclib package：

• Big integer types defined using the boost library
  • bigint
  • u64
  • u128
  • u256
  • u160
  • u512
• Integer and unsigned integers encoded using VLQ
  • unsigned_int
  • signed_int
• Custom types for efficient use of memory
  • map
  • array
  • list
• Types defined by the custom FixedHash class
  • h256 //32bytes
  • h160
  • h128
  • h64
  • Address