Velocity Reviews

Velocity Reviews (http://www.velocityreviews.com/forums/index.php)
-   Python (http://www.velocityreviews.com/forums/f43-python.html)
-   -   Re: Explanation of macros; Haskell macros (http://www.velocityreviews.com/forums/t324405-re-explanation-of-macros-haskell-macros.html)

Michael T. Babcock 11-03-2003 01:54 PM

Re: Explanation of macros; Haskell macros
 
>
>
>The costs: syntax seems to be constrained to have a very regular surface
>structure full of parentheses; the language must describe and implement a
>representation of code as data which would otherwise be unnecessary; every
>compiler must include an interpreter; it's hard to report errors to the
>user showing the code as it's written in the source if the error is found
>after macro expansion.
>


I don't really want to jump into the middle of a discussion here, but if
someone wanted to do this in Python, one *can* of course write Python
code that generates Python code and then executes it. This gives the
compile-time type macro execution timeframe; build the code you want to
execute with Python before executing it then execute it. There's no
need for an additional macro-like system when your runtime allows you to
execute your own strings.

I know this is a higher-order discussion on the merits of macro systems
in other languages and how they'd benefit (or not) Python, but I decided
to throw my $0.02 (CAN) in.

--
Michael T. Babcock
C.T.O., FibreSpeed Ltd.
http://www.fibrespeed.net/~mbabcock





All times are GMT. The time now is 04:24 PM.

Powered by vBulletin®. Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.