digitalmars.D.learn - How can this best be done?
"Johan Fjeldtvedt" <jaffe1 gmail.com> writes:
This post concerns the following code: https://gist.github.com/Jaffe-/6983847 It is an attempt to abstract away the details of storing a collection of struct elements as so-called parallel arrays (http://en.wikipedia.org/wiki/Parallel_array) instead of storing them sequentially. The ParallelArray template takes a struct, S, and a number of elements, SIZE, and creates a struct where each field is an array of size SIZE, for each field of S. The struct overloads opIndex, opIndexAssign and opApply, so that it can be used just like an ordinary array of structs. It's pretty neat and works fine, but I feel it's somewhat hacky. Is it okay to use .tupleof the way I do here? It does work, but I can't say I understand exactly how. Also, the recursive template bugs me. Can the code which declares the struct members be generated in some better way? I've tried writing a CTFE-able function to build the string instead of doing it recursively in the template, but I haven't been able to do it yet.
Oct 14 2013
"bearophile" <bearophileHUGS lycos.com> writes:
Oct 14 2013