Propagation class abstract base

Abstract class that is extended by all propagation types.

It makes it simpler to handle errors by not having to distinguish all different types separately every single time.

For example, the following snippet:

void example() {
  try {
    // some code that can throw
  } on Propagation {
    // `NonePropagation` and `ErrPropagation` do not
    // need separate `on` blocks here
    rethrow;
  } catch (e) {
    print(e);
  }
}

is equivalent to:

void example() {
  try {
    // some code that can throw
  } on NonePropagation {
    rethrow;
  } on ErrPropagation<Object> {
    rethrow;
  } catch (e) {
    print(e);
  }
}

Inheritance

• Object
• Error
• Propagation

Implementers

• ErrPropagation
• NonePropagation

Constructors

Propagation()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stackTrace → StackTrace?

The stack trace at the point where this error was first thrown.

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.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited