Checking C return results against NULL

[Rikki Cattermole via Digitalmars-d-learn]

On 1/01/2015 12:22 a.m., Laeeth Isharc wrote:
> Am I missing a more agreeable way to check the return value of a C
> function against NULL.  It's fine if it's a char*, but if it returns a
> pointer to some kind of struct, one has to go through and convert each
> instance of NULL to a cast of the appropriate return type.  Eg
> cast(funnystruct*)0
>
>    if ((tomime_fields.fld_description==cast(char*)0))
>      throw new Exception("show_part_info: description is NULL");

== for value
is for pointers

if (tomime_fields.fld_description is null)
	throw new Exception("...");