description

# StateError class

The operation was not allowed by the current state of the object.

Should be used when this particular object is currently in a state which doesn't support the requested operation, but other similar objects might, or the object itself can later change its state to one which supports the operation.

Example: Asking for `list.first` on a currently empty list. If the operation is never supported by this object or class, consider using UnsupportedError instead.

This is a generic error used for a variety of different erroneous actions. The message should be descriptive.

Inheritance
  - Object
  - Error
  - StateError

## Constructors

StateError(String message)

## Properties

hashCode → int
  The hash code for this object.
  no setterinherited
message → String
  final
runtimeType → Type
  A representation of the runtime type of the object.
  no setterinherited
stackTrace → StackTrace?
  The stack trace at the point where this error was first thrown.
  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.
  override

## Operators

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