Re: [boost] [static_if] Is there interest in a `static if` emulation library?

On Mon, Sep 1, 2014 at 11:26 AM, Matt Calabrese wrote:

On Mon, Sep 1, 2014 at 8:00 AM, Robert Ramey wrote:

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The compile-times argument doesn't impress me much though. Using a much more complex syntax or new library to shave a tiny bit of

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Even if your condition is known through a compile-time constant bool, If you don't add a level of indirection to prevent both from being instantiated, either manually or by way of a higher-level facility like a static if, your compile time for that translation unit can possibly double, or worse.

Yes, the point of static if wouldn't necessarily be performance even if compile-time performance could be improved by it, as Matt already pointed out (similar points are made in the various static if N-papers). In fact, in my original example the static if is used for correctness and not performance (so to check the assertion when T provides the appropriate operations for the check to actually compile). --Lorenzo