Double class

A validation rule for checking if a value is a valid double.

The Double class is a concrete implementation of the FormifyRule abstract class. It is used to validate whether a string value can be successfully parsed into a double (floating-point) number.

This rule checks if the input value is a valid double representation. If the value cannot be parsed as a double, an error message is generated.

Inheritance

• Object
• FormifyRule
• Double

Constructors

Double()

Creates an instance of the Double validation rule.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

message ↔ String

Gets the error message associated with the Double rule.

getter/setter pair, inherited-setter, override-getter

ruleKey → String

The unique key identifying the validation rule.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

buildMessage(String attribute, String input, {String onExtra(String)?}) → String

Builds a validation error message by replacing placeholders in the error message template.

inherited

call(String attribute, String value) → String?

Validates whether a value is a valid double representation.

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

Constants

key → const String

The unique identifier for the Double validation rule.