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60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
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// Copyright (c) 2023 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 array
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import (
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"fmt"
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F "github.com/IBM/fp-go/function"
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O "github.com/IBM/fp-go/option"
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)
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// Example_basic adapts examples from [https://github.com/inato/fp-ts-cheatsheet#basic-manipulation]
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func Example_basic() {
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someArray := From(0, 1, 2, 3, 4, 5, 6, 7, 8, 9) // []int
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isEven := func(num int) bool {
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return num%2 == 0
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}
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square := func(num int) int {
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return num * num
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}
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// filter and map
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result := F.Pipe2(
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someArray,
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Filter(isEven),
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Map(square),
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) // [0 4 16 36 64]
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// or in one go with filterMap
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resultFilterMap := F.Pipe1(
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someArray,
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FilterMap(
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F.Flow2(O.FromPredicate(isEven), O.Map(square)),
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),
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)
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fmt.Println(result)
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fmt.Println(resultFilterMap)
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// Output:
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// [0 4 16 36 64]
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// [0 4 16 36 64]
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}
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