Golang でキャッシュを使用して高次元データ アルゴリズムを処理するためのヒント。

package main

import (
    "fmt"
    "sync"
)

type Cache struct {
    sync.Mutex
    values map[string]interface{}
}

func (cache *Cache) SetValue(key string, value interface{}) {
    cache.Lock()
    defer cache.Unlock()

    cache.values[key] = value
}

func (cache *Cache) GetValue(key string) (interface{}, bool) {
    cache.Lock()
    defer cache.Unlock()

    value, ok := cache.values[key]
    return value, ok
}

func (cache *Cache) DeleteKey(key string) {
    cache.Lock()
    defer cache.Unlock()

    delete(cache.values, key)
}

func NewCache() *Cache {
    cache := &Cache{values: make(map[string]interface{})}
    return cache
}

func main() {
    cache := NewCache()

    cache.SetValue("key1", "value1")

    if value, ok := cache.GetValue("key1"); ok {
        fmt.Println(value)
    }

    cache.DeleteKey("key1")

    if _, ok := cache.GetValue("key1"); !ok {
        fmt.Println("key1 is deleted.")
    }
}

package main

import (
    "fmt"
    "sync"
)

type Cache struct {
    sync.Mutex
    values map[string]interface{}
}

func (cache *Cache) SetValue(key string, value interface{}) {
    cache.Lock()
    defer cache.Unlock()

    cache.values[key] = value
}

func (cache *Cache) GetValue(key string) (interface{}, bool) {
    cache.Lock()
    defer cache.Unlock()

    value, ok := cache.values[key]
    return value, ok
}

func NewCache() *Cache {
    cache := &Cache{values: make(map[string]interface{})}
    return cache
}

func HammingDistance(key1, key2 string, cache *Cache) int {
    if value, ok := cache.GetValue(key1+":"+key2); ok {
        return value.(int)
    }

    if len(key1) != len(key2) {
        return -1
    }

    distance := 0

    for i := 0; i < len(key1); i++ {
        if key1[i] != key2[i] {
            distance++
        }
    }

    cache.SetValue(key1+":"+key2, distance)

    return distance
}

func main() {
    cache := NewCache()

    distance1 := HammingDistance("abcdefg", "abcdefg", cache)
    fmt.Println(distance1)

    distance2 := HammingDistance("abcdefg", "bcdefgh", cache)
    fmt.Println(distance2)

    distance3 := HammingDistance("hijklmn", "pqrsxyz", cache)
    fmt.Println(distance3)
}