Re: [stack] QuoteAndEval

Manfred Von Thun <[email protected]> wrote:
> Still on the topic of quote and eval, it occurred to me that the Unix
>  command
>  languages (sh, csh, ksh, bash,..) have their own eval operator. It is the
>  backquote mechanism, which will evaluate what is enclosed inside the
>  backquotes `...` (I don¹t know what my mailer will do to it, it is the key
>  just under escape key at the top left).

>  Is there a lesson to be learned for concatenative languages?

I don't know what the lesson would be. Backquotes escape from a string
context to an executation/evaluation context. I suppose one could do
that in a concatenative language that had a string syntax.

More generally, I suppose one could "escape" from any context to an
evaluation, thus allowing you to compute a value at runtime which will
be compiled into the current quotation.

>   - Manfred

-Wm