On Thursday, 22 October 2020 at 16:03:45 UTC, H. S. Teoh wrote:
On Thu, Oct 22, 2020 at 03:32:57PM +0000, Andrey Zherikov via
Digitalmars-d-learn wrote:
There are two ways how __FILE__, __LINE__ etc. can se used in
function parameters: as regular parameters and as template
parameters:
[...]
What is recommended way?
What are pros/cons of each case?
I don't know what's the "recommended" way, but generally, I
prefer to pass them as regular parameters. Otherwise you will
get a lot of template bloat: one instantiation per file/line
combination.
However, sometimes there is not much choice: if your function
is variadic, then you pretty much have to use template
parameters, 'cos otherwise you won't be able to pick up the
__FILE__/__LINE__ of the caller with default arguments.
T
You will. This is possible since v2.079.0 (March 2018):
https://dlang.org/changelog/2.079.0.html#default_after_variadic
So yeah, always pass them as function parameters to avoid bloat.
