+++
title = "`is_success_type<T>`"
description = "An integral constant boolean variable true for `success_type<T>` types."
+++

An integral constant boolean variable true for {{% api "success_type<T>" %}} types.

*Overridable*: Not overridable.

*Namespace*: `OUTCOME_V2_NAMESPACE`

*Header*: `<outcome/success_failure.hpp>`
