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

• Object
• Enum
• StateMutability

Available extensions

• EnumName

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 setter, inherited

index → int

A numeric identifier for the enumerated value.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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.