Mastering Blockchain - Second Edition

Address

This data type holds a 160-bit long (20 byte) value. This type has several members that can be used to interact with and query the contracts. These members are described here:

• Balance: The balance member returns the balance of the address in Wei.
• Send: This member is used to send an amount of ether to an address (Ethereum's 160-bit address) and returns true or false depending on the result of the transaction, for example, the following:

      address to = 0x6414cc08d148dce9ebf5a2d0b7c220ed2d3203da; address from = this; 
      if (to.balance < 10 && from.balance > 50) to.send(20); 

• Call functions: The call, callcode, and delegatecall calls are provided in order to interact with functions that do not have ABI. These functions should be used ...