Req class

Validator for mandatory input data.

It will reject null or empty input values.

Note: the accepted input types are String, Iterable, and Map.

Constructors

Req({String? blank})

Checks whether an input value is blank — that is, whether the input value is either null or empty.

const

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

Methods

call(Object? input) → String?

Valid - returns null - if input is neither null nor empty.

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