Aneurin Barker Snook
33 lines
645 B
Go
33 lines
645 B
Go
package validate
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import "errors"
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// Validation error.
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var (
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ErrValueNotAllowed = errors.New("not allowed")
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)
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// In validates whether a value is found in a slice of allowed values.
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func In[T comparable](allow ...T) func(T) error {
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return func(value T) error {
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for _, cmp := range allow {
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if cmp == value {
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return nil
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}
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}
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return ErrValueNotAllowed
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}
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}
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// NotIn validates whether a value is not found in a slice of disallowed values.
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func NotIn[T comparable](allow ...T) func(T) error {
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return func(value T) error {
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for _, cmp := range allow {
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if cmp == value {
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return ErrValueNotAllowed
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}
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}
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return nil
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}
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}
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