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Implement v2 using type aliases (#141)
* fix: initial checkin of v2 Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: slowly migrate IO Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: migrate MonadTraverseArray and TraverseArray Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: migrate traversal Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: complete migration of IO Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: migrate ioeither Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: refactorY Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: next step in migration Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: adjust IO generation code Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: get rid of more IO methods Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: get rid of more IO * fix: convert iooption Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: convert reader Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: convert a bit of reader Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: new build script Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: cleanup Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: reformat Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: simplify Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: some cleanup Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: adjust Pair to Haskell semantic Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: documentation and testcases Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: some performance optimizations Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: remove coverage Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> * fix: better doc Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com> --------- Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Carsten Leue
GitHub
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// Copyright (c) 2023 - 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 example1 implements the first example in [https://dev.to/gcanti/getting-started-with-fp-ts-reader-1ie5]
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package example1
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import (
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"fmt"
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F "github.com/IBM/fp-go/v2/function"
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N "github.com/IBM/fp-go/v2/number"
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I "github.com/IBM/fp-go/v2/number/integer"
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"github.com/IBM/fp-go/v2/ord"
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R "github.com/IBM/fp-go/v2/reader"
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S "github.com/IBM/fp-go/v2/string"
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)
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type (
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I18n struct {
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True string
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False string
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}
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Dependencies struct {
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I18n I18n
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}
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)
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var (
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// g: func(int) R.Reader[*Dependencies, string], note how the implementation does not depend on the dependencies
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g = F.Flow2(
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ord.Gt(I.Ord)(2),
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f,
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)
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// h: func(string) R.Reader[*Dependencies, string], note how the implementation does not depend on the dependencies
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h = F.Flow3(
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S.Size,
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N.Add(1),
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g,
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)
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)
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func f(b bool) R.Reader[*Dependencies, string] {
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return func(deps *Dependencies) string {
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if b {
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return deps.I18n.True
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}
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return deps.I18n.False
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}
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}
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func ExampleReader() {
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deps := Dependencies{I18n: I18n{True: "vero", False: "falso"}}
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fmt.Println(h("foo")(&deps))
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fmt.Println(h("a")(&deps))
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// Output:
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// vero
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// falso
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}
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@@ -0,0 +1,97 @@
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// Copyright (c) 2023 - 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 example2 implements the second example in [https://dev.to/gcanti/getting-started-with-fp-ts-reader-1ie5]
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package example2
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import (
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"fmt"
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F "github.com/IBM/fp-go/v2/function"
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ID "github.com/IBM/fp-go/v2/identity"
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N "github.com/IBM/fp-go/v2/number"
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I "github.com/IBM/fp-go/v2/number/integer"
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"github.com/IBM/fp-go/v2/ord"
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R "github.com/IBM/fp-go/v2/reader"
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S "github.com/IBM/fp-go/v2/string"
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)
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type (
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I18n struct {
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True string
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False string
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}
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Dependencies struct {
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I18n I18n
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LowerBound int
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}
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)
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var (
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// h: func(string) R.Reader[*Dependencies, string], note how the implementation does not depend on the dependencies
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h = F.Flow3(
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S.Size,
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N.Add(1),
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g,
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)
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)
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func getLowerBound(deps *Dependencies) int {
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return deps.LowerBound
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}
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func g(n int) R.Reader[*Dependencies, string] {
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return F.Pipe1(
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R.Ask[*Dependencies](),
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R.Chain(F.Flow4(
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getLowerBound,
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ord.Gt(I.Ord),
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ID.Flap[bool](n),
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f,
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)),
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)
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}
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func f(b bool) R.Reader[*Dependencies, string] {
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return func(deps *Dependencies) string {
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if b {
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return deps.I18n.True
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}
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return deps.I18n.False
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}
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}
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func ExampleReader() {
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deps1 := Dependencies{I18n: I18n{True: "vero", False: "falso"}, LowerBound: 2}
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hFoo := h("foo")
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hA := h("a")
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fmt.Println(hFoo(&deps1))
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fmt.Println(hA(&deps1))
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deps2 := Dependencies{I18n: I18n{True: "vero", False: "falso"}, LowerBound: 4}
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fmt.Println(hFoo(&deps2))
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fmt.Println(hA(&deps2))
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// Output:
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// vero
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// falso
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// falso
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// falso
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}
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