<pre class="programlisting">template<
typename ExecutionContext,
typename F,
- typename CompletionToken>
+ typename CompletionToken = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>>
<a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.automatic_deduction_of_initiating_function_return_type"><span class="emphasis"><em>DEDUCED</em></span></a> co_spawn(
ExecutionContext & ctx,
F && f,
- CompletionToken && token,
+ CompletionToken && token = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>,
typename enable_if< is_convertible< ExecutionContext &, execution_context & >::value >::type * = 0);
</pre>
<p>