IsFalsey class

Checks if the element in question is falsey. The following are falsey:

• an empty string
• an empty list
• an empty map
• 0
• false
• Error objects
• Exception objects
• null

Inheritance

• Object
• Constraint
• IsFalsey

Constructors

IsFalsey({required String key})

Checks if the element in question is falsey. The following are falsey:

Properties

hashCode → int

The hash code for this object.

no setter, inherited

key → String

The key on which the constraint should be applied on

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → dynamic

the value that is used when evaluating the constraint

final, inherited

Methods

evaluate(JSON payload) → bool

Check if the payload satisfies the Constraint

override

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