StateError class Null safety

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 might 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, consider using UnsupportedError instead.

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

Inheritance

Constructors

StateError(String message)

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
message String
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
stackTrace StackTrace?
The stack trace at the point where this error was first thrown. [...]
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
A string representation of this object. [...]
override

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited