checkfn

func Contains ¶

func Contains(data, elem any) (valid, found bool)

Contains try loop over the data check if the data includes the element.

data allow types: string, map, array, slice

map         - check key exists
string      - check sub-string exists
array,slice - check sub-element exists

Returns:

• valid: data is valid
• found: element was found

return (false, false) if impossible. return (true, false) if element was not found. return (true, true) if element was found.

func IsEmpty ¶

func IsEmpty(v any) bool

IsEmpty value check

func IsNil ¶

func IsNil(v any) bool

IsNil value check