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https://github.com/IBM/fp-go.git
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46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
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// Copyright (c) 2024 - 2025 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package io
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import (
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"github.com/IBM/fp-go/v2/internal/functor"
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)
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type (
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ioFunctor[A, B any] struct{}
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// IOFunctor represents the functor type class for IO.
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// A functor allows mapping a function over a wrapped value without
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// unwrapping it, preserving the structure.
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IOFunctor[A, B any] = functor.Functor[A, B, IO[A], IO[B]]
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)
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func (o *ioFunctor[A, B]) Map(f func(A) B) Operator[A, B] {
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return Map(f)
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}
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// Functor returns an instance of the Functor type class for IO.
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// This provides a structured way to access functor operations (Map)
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// for IO computations.
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//
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// Example:
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//
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// f := io.Functor[int, string]()
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// result := f.Map(strconv.Itoa)(io.Of(42))
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func Functor[A, B any]() IOFunctor[A, B] {
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return &ioFunctor[A, B]{}
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}
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