funcs.go

// Package typr contains utility conventions, type definitions and constants
package typr

// returns:
//  -  0 if e1 == e2
//  -  1 if e1 > e2
//  - -1 if e1 < e2
type Comparator[V any] func(e1, e2 V) int

// returns bool true, if the specified element e "qualifies", and bool false, otherwise
type Qualifier[V any] func(e V) (r bool)

// accepts an index and an element of the specified type, and return an Operation value
type Ranger[V any] func(i int, e V) (r Op)

// returns the resolved value (as the specified type), for the specified value
type Resolver[V, R any] func(v V) (r R)

// returns a non-nil error, if the specified element e is considered invalid, and nil, otherwise
type Validator[V any] func(e V) (r error)