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fp-go/samples/mostly-adequate/support.go
Dr. Carsten Leue 8692078972 doc: add examples and solutions from mostly adequate
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
2023-09-03 22:21:23 +02:00

90 lines
1.8 KiB
Go

// Copyright (c) 2023 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 mostlyadequate
import (
A "github.com/IBM/fp-go/array"
F "github.com/IBM/fp-go/function"
N "github.com/IBM/fp-go/number"
)
type (
Car struct {
Name string
Horsepower int
DollarValue float32
InStock bool
}
)
func (car Car) getInStock() bool {
return car.InStock
}
func (car Car) getDollarValue() float32 {
return car.DollarValue
}
func (car Car) getHorsepower() int {
return car.Horsepower
}
func (car Car) getName() string {
return car.Name
}
func average(val []float32) float32 {
return F.Pipe2(
val,
A.Fold(N.MonoidSum[float32]()),
N.Div(float32(len(val))),
)
}
var (
Cars = A.From(Car{
Name: "Ferrari FF",
Horsepower: 660,
DollarValue: 700000,
InStock: true,
}, Car{
Name: "Spyker C12 Zagato",
Horsepower: 650,
DollarValue: 648000,
InStock: false,
}, Car{
Name: "Jaguar XKR-S",
Horsepower: 550,
DollarValue: 132000,
InStock: true,
}, Car{
Name: "Audi R8",
Horsepower: 525,
DollarValue: 114200,
InStock: false,
}, Car{
Name: "Aston Martin One-77",
Horsepower: 750,
DollarValue: 1850000,
InStock: true,
}, Car{
Name: "Pagani Huayra",
Horsepower: 700,
DollarValue: 1300000,
InStock: false,
})
)