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Subject: Re: [boost] [metaparse] Practical usefulness
From: Abel Sinkovics (abel_at_[hidden])
Date: 2015-06-04 15:02:39


On 2015-06-04 08:49, TONGARI J wrote:
> It seems to use the similar trick that I posted in an older thread (you'd
> been there too):
> We all know that it can't replace your STRING implementation since it
> cannot be used in unevaluated context.
You're right, I forgot about that thread.

> Here's a demo of toy compile-time parser that mimics Boost.Spirit:
This trick here seems to be the same as in Evgeny's code: create a
lambda function from the string and pass it to a template function as
argument and use it *inside* the template function, so no need to put
decltype around the expression containing the lambda (and therefore
using lambda in an unevaluated context can be avoided).


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