contracts

package

v0.3.2 Latest Latest Go to latest Published: Jun 6, 2026 License: MIT Imports: 0 Imported by: 0

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type FilterMapper[T any, U any] func(T) (U, bool)

FilterMapper converts one value into another value and reports whether to keep it.

type Keyer[T any, K comparable] func(T) (K, bool)

Keyer derives an accepted comparable key for indexing a value.

type Mapper[T any, U any] func(T) U

Mapper converts one value into another value.

type Predicate[T any] func(T) bool

Predicate reports whether value should be accepted.