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Adds get for Option[T]. (#8462)

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Dominik Picheta 2018-08-14 00:09:08 +01:00 • committed by Andreas Rumpf
commit feda366d86
1 changed files with 8 additions and 1 deletions
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9
lib/pure/options.nim
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@ -129,7 +129,7 @@ proc get*[T](self: Option[T]): T =
## Returns contents of the Option. If it is none, then an exception is ## Returns contents of the Option. If it is none, then an exception is
## thrown. ## thrown.
if self.isNone: if self.isNone:
raise UnpackError(msg : "Can't obtain a value from a `none`") raise UnpackError(msg: "Can't obtain a value from a `none`")
self.val self.val
proc get*[T](self: Option[T], otherwise: T): T = proc get*[T](self: Option[T], otherwise: T): T =
@ -139,6 +139,13 @@ proc get*[T](self: Option[T], otherwise: T): T =
else: else:
otherwise otherwise
proc get*[T](self: var Option[T]): var T =
## Returns contents of the Option. If it is none, then an exception is
## thrown.
if self.isNone:
raise UnpackError(msg: "Can't obtain a value from a `none`")
return self.val
proc map*[T](self: Option[T], callback: proc (input: T)) = proc map*[T](self: Option[T], callback: proc (input: T)) =
## Applies a callback to the value in this Option ## Applies a callback to the value in this Option
if self.isSome: if self.isSome: