[#std-coroutine_traits-0f]
= xref:std.adoc[std]::coroutine_traits<xref:folly/coro/safe_task.adoc[folly::coro::safe_task<ArgSafety, T>], Args...>
:relfileprefix: ../
:mrdocs:

Coroutine traits selecting the promise type for a `safe_task` coroutine.

== Synopsis

Declared in `<folly/coro/safe/SafeTask.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:folly/safe_alias.adoc[folly::safe_alias] ArgSafety,
    typename T,
    typename... Args>
struct coroutine_traits<xref:folly/coro/safe_task.adoc[folly::coro::safe_task<ArgSafety, T>], Args...>;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:std/coroutine_traits-0f/promise_type.adoc[`promise_type`] 
| The promise type driving a `safe_task` coroutine.
|===



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