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66 lines
1.4 KiB
Go
66 lines
1.4 KiB
Go
package main
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import (
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"errors"
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)
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type proc func(...interface{}) (interface{}, error)
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func addition(vals ...interface{}) (interface{}, error) {
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a := accumulator{
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name: "addition",
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floatFn: func(left, right float64) (float64, error) {
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return left + right, nil
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},
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intFn: func(left, right int64) (int64, error) {
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return left + right, nil
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},
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}
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return a.total(vals...)
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}
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func subtraction(vals ...interface{}) (interface{}, error) {
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a := accumulator{
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name: "subtraction",
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floatFn: func(left, right float64) (float64, error) {
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return left - right, nil
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},
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intFn: func(left, right int64) (int64, error) {
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return left - right, nil
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},
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}
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return a.total(vals...)
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}
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func multiplication(vals ...interface{}) (interface{}, error) {
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a := accumulator{
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name: "multiplication",
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floatFn: func(left, right float64) (float64, error) {
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return left * right, nil
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},
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intFn: func(left, right int64) (int64, error) {
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return left * right, nil
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},
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}
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return a.total(vals...)
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}
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func division(vals ...interface{}) (interface{}, error) {
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a := accumulator{
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name: "division",
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floatFn: func(left, right float64) (float64, error) {
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if right == 0.0 {
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return 0.0, errors.New("float division by zero")
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}
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return left / right, nil
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},
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intFn: func(left, right int64) (int64, error) {
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if right == 0 {
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return 0, errors.New("int division by zero")
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}
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return left / right, nil
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},
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}
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return a.total(vals...)
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}
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