is

func After ¶

func After(t time.Time) datacop.ValidationFunc

After checks if a time is after another

func AllIn ¶

func AllIn[T comparable](allowed ...T) datacop.ValidationFunc

AllIn checks if all values in a slice are in a set of allowed values

Example usage: AllIn(1, 2, 3)([]int{1, 2}) // returns true AllIn(1, 2, 3)([]int{1, 4}) // returns false AllIn("a", "b", "c")([]string{"a", "b"}) // returns true AllIn("a", "b", "c")([]string{"a", "d"}) // returns false

func Before ¶

func Before(t time.Time) datacop.ValidationFunc

Before checks if a time is before another

func Between ¶

func Between[T constraints.Ordered](min, max T) datacop.ValidationFunc

Between checks if a value is between a minimum and maximum value Example usage:

Between(10, 20)(15) // returns true Between(10, 20)(25) // returns false

func BetweenTime ¶

func BetweenTime(start, end time.Time) datacop.ValidationFunc

BetweenTime checks if a value is between two other values

Example usage: BetweenTime(time.Now().Add(-1*time.Hour), time.Now().Add(1*time.Hour))(time.Now()) // returns true BetweenTime(time.Now().Add(-1*time.Hour), time.Now().Add(-30*time.Minute))(time.Now()) // returns false

func Email ¶

func Email(value any) bool

Email is a very simple email validation function. For a more comprehensive email validation, consider using a package like github.com/patrickward/mailcop.

Example usage: Email("[email protected]") // returns true Email("invalid-email") // returns false

func Equal ¶

func Equal[T comparable](other T) datacop.ValidationFunc

Equal checks if values are equal Example usage: Equal(10)(10) // returns true Equal(10)(5) // returns false

func EqualLength ¶ added in v0.0.3

func EqualLength(length int) datacop.ValidationFunc

EqualLength returns a validation function that checks if a string has a specific length

Example usage: EqualLength(5)("hello") // returns true EqualLength(5)("hi") // returns false EqualLength(5)("hello!") // returns false

func EqualStrings ¶

func EqualStrings(value, other string) bool

EqualStrings checks if two strings are equal

Example usage: EqualStrings("test", "test") // returns true EqualStrings("test", "TEST") // returns false

func GreaterOrEqual ¶

func GreaterOrEqual[T cmp.Ordered](n T) datacop.ValidationFunc

GreaterOrEqual returns a validation function that checks if a value is greater than or equal to a specified value

Example usage: GreaterOrEqual(10)(15) // returns true GreaterOrEqual(10)(10) // returns true GreaterOrEqual(10)(5) // returns false

func GreaterThan ¶

func GreaterThan[T cmp.Ordered](n T) datacop.ValidationFunc

GreaterThan returns a validation function that checks if a value is greater than a specified value

Example usage:

GreaterThan(10)(15) // returns true GreaterThan(10)(5) // returns false

func In ¶

func In[T comparable](allowed ...T) datacop.ValidationFunc

In checks if a value is in a set of allowed values

Example usage: In(1, 2, 3)(2) // returns true In(1, 2, 3)(4) // returns false In("a", "b", "c")("b") // returns true In("a", "b", "c")("d") // returns false

func LessOrEqual ¶

func LessOrEqual[T cmp.Ordered](n T) datacop.ValidationFunc

LessOrEqual returns a validation function that checks if a value is less than or equal to a specified value

Example usage: LessOrEqual(10)(5) // returns true LessOrEqual(10)(10) // returns true LessOrEqual(10)(15) // returns false

func LessThan ¶

func LessThan[T cmp.Ordered](n T) datacop.ValidationFunc

LessThan returns a validation function that checks if a value is less than a specified value

Example usage: LessThan(10)(5) // returns true LessThan(10)(15) // returns false

func Match ¶

func Match(pattern string) datacop.ValidationFunc

Match returns a validation function that checks if a string matches a pattern

Example usage: Match(`^[a-zA-Z0-9]+$`)(username) // returns true if username is alphanumeric Match(`^[a-zA-Z0-9]+$`)(email) // returns false if email is not alphanumeric

func Max ¶

func Max[T cmp.Ordered](max T) datacop.ValidationFunc

Max returns a validation function that checks maximum value

Example usage: Max(10)(5) // returns true Max(10)(15) // returns false

func MaxLength ¶

func MaxLength(max int) datacop.ValidationFunc

MaxLength returns a validation function that checks maximum string length

Example usage: MaxLength(5)("hello") // returns false MaxLength(5)("hi") // returns true

func Min ¶

func Min[T cmp.Ordered](min T) datacop.ValidationFunc

Min returns a validation function that checks minimum value

Example usage: Min(10)(15) // returns true Min(10)(5) // returns false

func MinLength ¶

func MinLength(min int) datacop.ValidationFunc

MinLength returns a validation function that checks minimum string length

Example usage: MinLength(5)("hello") // returns true MinLength(5)("hi") // returns false

func NoDuplicates ¶

func NoDuplicates[T comparable]() datacop.ValidationFunc

NoDuplicates checks if a slice contains any duplicate values

Example usage: NoDuplicates()([]int{1, 2, 3}) // returns true NoDuplicates()([]int{1, 2, 2}) // returns false

func NotZero ¶

func NotZero[T comparable](value T) bool

NotZero checks if a numeric value is not a zero value

func Password ¶

func Password(value any) bool

Password returns common password validation rules. This is an example of a function that could be used in a project's own validation library, combining common validation rules into a single function.

func Phone ¶

func Phone(value any) bool

Phone is a simple phone number validation function. It expects a string with a format of 123-456-7890.

func Required ¶

func Required(value any) bool

Required checks if a value is non-empty

Example usage: Required("some value") // returns true Required("") // returns false Required([]int{1, 2, 3}) // returns true Required([]int{}) // returns false

func Username ¶

func Username(value any) bool

Username returns common username validation rules. This is an example of a function that could be used in a project's own validation library, combining common validation rules into a single function.