Return the reference to the non‐modifiable value of the element identified by the specified handle. The behavior is undefined unless handle is valid. Note that this method will fail to compile unless the VALUE parameter is not bslmf::Nil.
Return the reference to the non‐modifiable value of the element identified by the specified handle. The behavior is undefined unless handle is valid. Note that this method will fail to compile unless the VALUE parameter is not bslmf::Nil.