Address Type.md

45 - Address Type

The address type comes in two types:

1. address: Holds a 20 byte value (size of an Ethereum address)

2. address payable: Same as address, but with the additional members transfer and send. address payable is an address you can send Ether to, while a plain address cannot be sent Ether. 

3. Operators are <=, <, ==, !=, >= and >

4. Conversions: Implicit conversions from address payable to address are allowed, whereas conversions from address to address payable must be explicit via payable(<address>). Explicit conversions to and from address are allowed for uint160, integer literals, bytes20 and contract types. 

5. Only expressions of type address and contract-type can be converted to the type address payable via the explicit conversion payable(...). For contract-type, this conversion is only allowed if the contract can receive Ether, i.e., the contract either has a receive or a payable fallback function.

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Slide Screenshot

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Slide Deck

• Account Address: EOA/Contract
• Keyword: account (payable) 20 Bytes
• Operators are <=, <, ==, !=, >= and >
• Implicit/Explicit Conversions
• Security: Critical
• Access Control, Balances etc.

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References

• Youtube Reference

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Tags

Comparison & Bitwise Logic