The highest tagged major version is v2.

cachel5

package

v1.12.5 Latest Latest Go to latest Published: Jul 8, 2023 License: MIT Imports: 9 Imported by: 1

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func DefaultCanReadDate() string

DefaultCanReadDate 获取默认可以读缓存文件的日期

func DefaultCanUpdateDate() string

DefaultCanUpdateDate 获取默认可以更新缓存文件的日期

func RegisterCacheLoader(key string, loader CacheLoader)

func SwitchDate(date string)

type Cache1D[T Feature] struct {
	Key  string // 缓存关键字
	Date string // 日期
	// contains filtered or unexported fields
}

Cache1D 每天1个证券代码1条数据

func NewCache1D[T Feature](key string, factory func(date, securityCode string) T) *Cache1D[T]

NewCache1D 创建一个新的C1D对象

key支持多级相对路径, 比如a/b, 创建的路径是~/.quant1x/a/b.yyyy-mm-dd

func (this *Cache1D[T]) Apply(merge func(code string, local *T) (updated bool))

Apply 数据合并

泛型T需要保持一个string类型的Date字段

func (this *Cache1D[T]) Get(securityCode string, date ...string) *T

Get 获取指定证券代码的数据

func (this *Cache1D[T]) Length() int

Length 获取长度

func (this *Cache1D[T]) LoadCache(date string)

LoadCache 加载指定日期的数据

func (this *Cache1D[T]) ReplaceCache()

ReplaceCache 替换当前缓存数据

func (this *Cache1D[T]) Set(securityCode string, newValue T)

Set 更新map中指定证券代码的数据

type CacheLoader interface {
	// LoadCache 加载指定日期的缓存
	LoadCache(date string)
}

CacheLoader 缓存加载器

type Feature interface {
	GetDate() string
	GetSecurityCode() string
}

Feature 特征, 因子Factor