V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
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Public Member Functions | |
V8_INLINE bool | IsNothing () const |
V8_INLINE bool | IsJust () const |
V8_INLINE T | ToChecked () const |
V8_WARN_UNUSED_RESULT V8_INLINE bool | To (T *out) const |
V8_INLINE T | FromJust () const |
V8_INLINE T | FromMaybe (const T &default_value) const |
V8_INLINE bool | operator== (const Maybe &other) const |
V8_INLINE bool | operator!= (const Maybe &other) const |
Friends | |
template<class U > | |
Maybe< U > | Nothing () |
template<class U > | |
Maybe< U > | Just (const U &u) |
A simple Maybe type, representing an object which may or may not have a value, see https://hackage.haskell.org/package/base/docs/Data-Maybe.html.
If an API method returns a Maybe<>, the API method can potentially fail either because an exception is thrown, or because an exception is pending, e.g. because a previous API call threw an exception that hasn't been caught yet, or because a TerminateExecution exception was thrown. In that case, a "Nothing" value is returned.