803dc3e687
This PR adds the `@[expose]` attribute to many functions (and changes some theorems to be by `:= (rfl)`) in preparation for the `@[defeq]` attribute change in #8419.
23 lines
463 B
Text
23 lines
463 B
Text
/-
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Copyright (c) 2019 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Leonardo de Moura
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-/
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module
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prelude
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import Init.Data.Option.Basic
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import Init.Util
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universe u
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namespace Option
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/--
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Extracts the value from an `Option`, panicking on `none`.
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-/
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@[inline, expose] def get! {α : Type u} [Inhabited α] : Option α → α
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| some x => x
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| none => panic! "value is none"
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end Option
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