core library Null safety

The package's core validators.

Classes

Len
Length-related constraints. [...]
Match
Constrains input data values to a certain text pattern.
Pair
A pair of validators.
Req
Validator for mandatory input data. [...]
ReqLen
Convenient validator for required fields with length (number of items) constraints. [...]
ReqMatch
Convenient validator for required fields whose constraints regard to text pattern.
Rules<T>
Multiple rules applied to input data.
ToValObj
Transforms an input value of type 'Object?' into a more suitable type.
Trim
Trims input data. [...]