diff options
Diffstat (limited to 'modules/optional/option.go')
| -rw-r--r-- | modules/optional/option.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/modules/optional/option.go b/modules/optional/option.go index af9e5ac852..6075c6347e 100644 --- a/modules/optional/option.go +++ b/modules/optional/option.go @@ -3,6 +3,14 @@ package optional +import "strconv" + +// Option is a generic type that can hold a value of type T or be empty (None). +// +// It must use the slice type to work with "chi" form values binding: +// * non-existing value are represented as an empty slice (None) +// * existing value is represented as a slice with one element (Some) +// * multiple values are represented as a slice with multiple elements (Some), the Value is the first element (not well-defined in this case) type Option[T any] []T func None[T any]() Option[T] { @@ -43,3 +51,12 @@ func (o Option[T]) ValueOrDefault(v T) T { } return v } + +// ParseBool get the corresponding optional.Option[bool] of a string using strconv.ParseBool +func ParseBool(s string) Option[bool] { + v, e := strconv.ParseBool(s) + if e != nil { + return None[bool]() + } + return Some(v) +} |