anyutil

func AnyMap ¶

func AnyMap[K cmp.Ordered, V any](m map[K]V) (o map[K]any)

AnyMap converts a map[K]V to a map[K]any.

func As ¶

func As[T error](err error) (T, bool)

As is a generic version of errors.As. It returns the first error in err’s chain that matches type T, return true if found. T should be a pointer to a custom error struct type. For example: *MyCustomError

func FieldMap ¶

func FieldMap(s any) map[string]any

FieldMap returns a map of names and values of the top-level exported fields in struct s. Anonymous fields are ignored, as well as non-exported fields. s can be a pointer or an interface to a struct as well.

func If ¶

func If[T1 comparable, T any](cond T1, i1 T, i2 T) T

If returns the first item if cond is not a zero value (like false), or the second item if it is the zero value.

i := 1
s := ""

fmt.Println(If(i == 1, 1, 2))
fmt.Println(If(s, "yes", "no"))

Output:

1
no

func IsFloat ¶

func IsFloat(val interface{}) bool

IsFloat returns true if the given value is a float32 or float64.

func IsInteger ¶

func IsInteger(val interface{}) bool

IsInteger returns true if the given value is a variant of an integer type.

func IsNil ¶

func IsNil(i any) bool

IsNil is a safe test for nil for any kind of variable, and will not panic If i points to a nil object, IsNil will return true, as opposed to i==nil which will return false

func IsSlice ¶

func IsSlice(value any) bool

IsSlice returns true if value is a slice

func Join ¶

func Join[K any](values []K, sep string) (out string)

func MapSlice ¶

func MapSlice[T, K any](i []K) (o []T)

MapSlice converts a slice of K to a slice of T. This will only work if T is an interface{} type, i contains interfaces to T, or K is convertible to T by a type cast.

func MapSliceFunc ¶

func MapSliceFunc[K, T any](i []K, f func(j K) T) (o []T)

MapSliceFunc converts a slice of K to a slice of T using the mapping function f.

func Or ¶

func Or[T comparable](vals ...T) T

Or returns the first of its arguments that is not equal to the zero value. If no argument is non-zero, it returns the zero value.

fmt.Println(Or("yes", "no"))
fmt.Println(Or("", "no"))

Output:

yes
no

func SetFields ¶

func SetFields(s any, values map[string]any) error

SetFields will restore to s values that were extracted using FieldMap

func SortedKeys ¶

func SortedKeys[K cmp.Ordered, V any](m map[K]V) []K

SortedKeys returns the keys of a map in sort order. The keys must be sortable, of course.

func StringMap ¶

func StringMap[K cmp.Ordered](m map[K]any) (o map[K]string)

StringMap converts a map[K]any to a map[K]string. It will attempt to cast to a string, and if that fails, will use fmt.Print to do the conversion to string.

func Zero ¶

func Zero[T any]() T

Zero returns the zero value of a type.