main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"sort"
)
func main() {
l := list{
{title: "moby dick", price: 10, released: toTimestamp(118281600)},
{title: "odyssey", price: 15, released: toTimestamp("733622400")},
{title: "hobbit", price: 25},
}
// sort.Sort(l)
// sort.Sort(sort.Reverse(l))
// sort.Sort(byReleaseDate(l))
sort.Sort(sort.Reverse(byReleaseDate(l)))
fmt.Print(l)
}
/*
Summary:
- sort.Sort() can sort any type that implements the sort.Interface
- sort.Interface has three methods: Len(), Less(), Swap()
- Len() returns the length of a collection.
- Less(i, j) should return true when an element comes before another one.
- Swap(i, j)s the elements when Less() returns true.
- sort.Reverse() can reverse sort a type that satisfies the sort.Interface.
- You can customize the sorting:
- Either by implementing the sort.Interface methods,
- or by anonymously embedding a type that already satisfies the sort.Interface
- and adding a Less() method.
- Anonymous embedding means auto-forwarding method calls to an embedded value.
*/
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