StateMutability enum

The state mutability of a contract function defines how that function interacts with the blockchain.

Functions whose mutability is either pure or view promise to not write data to the blockchain. This allows Ethereum nodes to execute them locally instead of sending a transaction for the invocation. That in turn makes them free to use. Mutable functions, like nonPayable or payable may write to the blockchain, which means that they can only be executed as part of a transaction, which has gas costs.

Inheritance

Constructors

StateMutability()
const

Values

pure → const StateMutability

Function whose output depends solely on it's input. It does not ready any state from the blockchain.

view → const StateMutability

Function that reads from the blockchain, but doesn't write to it.

nonPayable → const StateMutability

Function that may write to the blockchain, but doesn't accept any Ether.

payable → const StateMutability

Function that may write to the blockchain and additionally accepts Ether.

Properties

hashCode → int
The hash code for this object.
no setterinherited
index → int
A numeric identifier for the enumerated value.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

values → const List<StateMutability>
A constant List of the values in this enum, in order of their declaration.