BOOST_OUTCOME_TRY(var, expr)
Evaluate an expression which results in a type matching the following customisation points, assigning T to a variable called var if successful, immediately returning try_operation_return_as(X)
from the calling function if unsuccessful:
BOOST_OUTCOME_V2_NAMESPACE::try_operation_has_value(X)BOOST_OUTCOME_V2_NAMESPACE::try_operation_return_as(X)BOOST_OUTCOME_V2_NAMESPACE::try_operation_extract_value(X)
Default overloads for these customisation points are provided. See the recipe for supporting foreign input to BOOST_OUTCOME_TRY.
Hints are given to the compiler that the expression will be successful. If you expect failure, you should use BOOST_OUTCOME_TRY_FAILURE_LIKELY(var, expr)
instead.
Overridable: Not overridable.
Definition: See BOOST_OUTCOME_TRYV(expr)
for most of the mechanics.
If successful, an auto &&var is initialised to the expression result’s .assume_value() if available, else to its .value(). This binds a reference possibly to the T stored inside the bound result of the expression, but possibly also to a temporary emitted from the value observer function.
Header: <boost/outcome/try.hpp>



