[ox/std] Add Result::to for passing value to functions

(synced from 741026680a)

src/ox/std/error.hpp

@@ -197,6 +197,14 @@ struct [[nodiscard]] Result {
 		}
 		return value;
 	}
+
+	constexpr ox::Result<T> to(const auto &f) noexcept {
+		if (error) [[unlikely]] {
+			return OxError(1);
+		}
+		return f(value);
+	}
+
 };
 
 namespace detail {
@@ -206,8 +214,8 @@ constexpr Error toError(const Error &e) noexcept {
 }
 
 template<typename T>
-constexpr Error toError(const Result<T> &ve) noexcept {
+constexpr Error toError(const Result<T> &r) noexcept {
-	return ve.error;
+	return r.error;
 }
 
 }