mirror of
https://github.com/IBM/fp-go.git
synced 2025-11-23 22:14:53 +02:00
42 lines
1.4 KiB
Go
42 lines
1.4 KiB
Go
// Copyright (c) 2024 - 2025 IBM Corp.
|
|
// All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package statereaderioeither
|
|
|
|
import (
|
|
"github.com/IBM/fp-go/v2/eq"
|
|
"github.com/IBM/fp-go/v2/function"
|
|
"github.com/IBM/fp-go/v2/readerioeither"
|
|
)
|
|
|
|
// Eq implements the equals predicate for values contained in the [StateReaderIOEither] monad
|
|
func Eq[
|
|
S, R, E, A any](eqr eq.Eq[ReaderIOEither[R, E, Pair[S, A]]]) func(S) eq.Eq[StateReaderIOEither[S, R, E, A]] {
|
|
return func(s S) eq.Eq[StateReaderIOEither[S, R, E, A]] {
|
|
return eq.FromEquals(func(l, r StateReaderIOEither[S, R, E, A]) bool {
|
|
return eqr.Equals(l(s), r(s))
|
|
})
|
|
}
|
|
}
|
|
|
|
// FromStrictEquals constructs an [eq.Eq] from the canonical comparison function
|
|
func FromStrictEquals[
|
|
S comparable, R any, E, A comparable]() func(R) func(S) eq.Eq[StateReaderIOEither[S, R, E, A]] {
|
|
return function.Flow2(
|
|
readerioeither.FromStrictEquals[R, E, Pair[S, A]](),
|
|
Eq[S, R, E, A],
|
|
)
|
|
}
|