gm

func BeginGormTx ¶

func BeginGormTx() *gorm.DB

func CommitGormTx ¶

func CommitGormTx(tx *gorm.DB) error

func FilterOne ¶ added in v0.0.6

func FilterOne[T any](s []T, fn func(T) bool) (t T)

Returns the first element that meet the condition specified in a callback function.

func HashArrayToArrays ¶

func HashArrayToArrays[T any](input []T, count int) [][]T

func InitGorm ¶

func InitGorm(host string, port int64, user, password, db_name string) (err error)

func Map ¶

func Map[T any, T2 any](s []T, fn func(t T) (T2, error)) (t2 []T2, err error)

Calls a defined callback function on each element of an array, and returns an array that contains the results.

func StringArrayToNumberArray() {
	var stringArray []string = []string{"1", "2", "3"}

	numberArray, err := Map(stringArray, func(s string) (int64, error) {
		return strconv.ParseInt(s, 10, 64)
	})
	if err != nil {
		fmt.Println("string array to number array error, msg: ", err)
		return
	}
	fmt.Println(numberArray)
}

func CalculateSquareValue() {
	var numArray []int64 = []int64{2, 3, 4}
	squareArray, _ := Map(numArray, func(n int64) (int64, error) {
		return (n * n), nil
	})
	fmt.Println(squareArray)
}

func NewGormSession ¶

func NewGormSession() *gorm.DB

func ReadFileBytes ¶

func ReadFileBytes(filePath string) ([]byte, error)

func ReadFileHash ¶

func ReadFileHash(data []byte) (string, error)

func TruncateString ¶ added in v0.0.6

func TruncateString(v string, start, end int) string

Cut off the beginning and end of the string and add ellipsis at both ends to truncate the string

func UniqueAppend ¶ added in v0.0.7

func UniqueAppend[S ~[]E, E comparable](s S, v E) S

Only add the element if it is not already in the slice

func ValidateJsonUnmarshal ¶

func ValidateJsonUnmarshal(data []byte, v any) error

func ValidateStruct ¶

func ValidateStruct(v any) error