Hex class

Hex - any one of the sixteen hexadecimal digits 0 to F.

For example, the values "1", "123", "1B", and "CAFEBABE" are valid; "AG", "12@", "123.34", "9.99" are invalid.

Blank field — null or empty — is a valid input.

If the field is mandatory, see ReqHex or Req.

Constructors

Hex({String? mal})

Constrains the input data to hexadecimal digits 0-9A-F.

Hex.len(int len, {String? mal, String? diff})

Constrains the input data to the hexadecimal digits 0-9A–F and its length (number of digits) to len hex-digits.

Hex.max(int max, {String? mal, String? long})

Constrains the input data to the hex-digits 0-9A–F and its length (number of hex-digits) to a maximum of max hex-digits.

Hex.min(int min, {String? mal, String? short})

Constrains the input data to the hex-digits 0-9A–F and its length (number of hex-digits) to a minimum of min hex-digits.

Hex.range(int min, int max, {String? mal, String? short, String? long})

Constrains the input data to the hex-digits 0-9A–F and its length (number of hex-digits) within the range min–max.

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(String? input) → String?

Valid - returns null - if input is either null or consists of hex-digits.

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