Aneurin Barker Snook
28 lines
689 B
Go
28 lines
689 B
Go
package validate
|
|
|
|
// Validation error.
|
|
var (
|
|
ErrMustHaveMoreItems = NewError("must have at least %d items")
|
|
ErrMustHaveFewerItems = NewError("must have no more than %d items")
|
|
)
|
|
|
|
// MaxSize validates the length of a slice as being less than or equal to a given maximum.
|
|
func MaxSize[T any](l int) func([]T) error {
|
|
return func(value []T) error {
|
|
if len(value) > l {
|
|
return ErrMustHaveFewerItems.With(l)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// MinSize validates the length of a slice as being greater than or equal to a given minimum.
|
|
func MinSize[T any](l int) func([]T) error {
|
|
return func(value []T) error {
|
|
if len(value) < l {
|
|
return ErrMustHaveMoreItems.With(l)
|
|
}
|
|
return nil
|
|
}
|
|
}
|