The use case is translate http header key into enum.
this is the current code : https://run.dlang.io/is/lpw29w
In this fake code I only list a few headers, it should be more.
but less then 128 and only include the a few codes.
how to make this more fast like with one loop and get the results.
I am think of use PCRE compile for this, but not sure how.
It should also save the non default headers in to a new array, so
when search non default headers will reduce the total size.
I am plan to write a more fast http server with D betterC compare
to vibed.
