Re: (eval '(java.lang.System:nanoTime)) won't work

[Per Bothner <per at bothner dot com>]

On 06/10/2013 07:14 PM, Morven Sun wrote:
> 
> 在 2013-6-10 上午4:14，"Per Bothner" <per@bothner.com 
> <mailto:per@bothner.com>>写道：
>>
>> Generic Scheme has a number of inconsistencies and awkward issues.
>>
> Well, really? I originally thought Scheme itself is quite complete as a 
> lambda calculus implementation. To tell the truth I can't quite 
> understand your statements here.
> 
> I'm a little fond of scheme because of its pure form and I haven't read 
> such articles about its inconsistent,may I ask you to show me some links 
> about this?

Not necessarily "inconsistent".  However, people generally agree
there are some "warts" - things we wouldn't do if starting from
scratch.  An example is that the top-level is a bit strange - you
get a weird mix of static and dynamic scoping.  Some of us
think that mutable fix-length strings make no sense.  (In a
Unicode world, there is little point in modifying a string unless
you can also change its length.) And so on.

>> Right - the colon notation does that.  However, we want to make
>> it easy to "port" Scheme programs to Kawa.  Plus we want to make
>> it easy for people who are looking for "Scheme" (rather than "Kawa"),
>> but need/want to run on the Java platform.
>>
> 
> Do you mean that kawa is not at first a scheme implementation? But in my 
> case I came to kawa first because it's scheme,and then I found its power 
> to manipulate the Java world which is fantastic!

Kawa is a dialect of Scheme.  It is mostly a superset of standard
Scheme, but with some changes and limitations.

> With nearly the the same approach to use Java and kawa's fast speed , 
> here I wander  why clojure is much more popular? For at first there are 
> much more documents for Clojure than for Kawa!

I wonder too.  Better marketing is at least part of it.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/