Continuations and generators

Slava Pestov — 2004-06-08 06:21:02

Chris,



I think your generator library should be included with Factor; what do 

you think? Your code is nicely written. You're certainly making more use 

of continuations than I do :)



Two minor style notes; your definitions are maybe a tad too long. Also, 

can you please use the documentation comment syntax:



: some-word ( ... )

     #! docs...

     #! more docs...

     ... ;



That way, the comments will be visible when the word definition is 

inspected in the interpreter using "see".



Perhaps we could use a name other than 'yield'. My game library already 

contains a word 'yield', with a different meaning. While vocabularies 

will prevent the two names from clashing, it could still get confusing :)



Slava



PS: I forgot to incorporate tree-each in 0.59. It will be in the next 

release.

Chris Double — 2004-06-13 02:34:43

On Tue, 08 Jun 2004 02:21:02 -0400, "Slava Pestov" <slava@...>

said:

 > I think your generator library should be included with Factor; what do 

> you think? Your code is nicely written. You're certainly making more use 

> of continuations than I do :)



 
Sure, if you want to include it that's fine with me. Continuations

combined with a Forth/Joy like language is an interesting combination and

is the area I'm playing with the most at the moment. Also my main job is

maintaining a continuation based web application server in Scheme so it

interests me to compare the approaches of the two languages. I suspect

that because continuations can't be compiled that some of the things I'm

doing won't be very efficient or the best way of doing things though.



 > Two minor style notes; your definitions are maybe a tad too long. Also, 

> can you please use the documentation comment syntax:



 
Sure, I'll change the code. The funny thing is, although I have long

definitions, I write them piece by piece and test each bit then combine

them into the one definition! I need to come up with names and keep the

smaller pieces around. I marvel at the nicely factored code in the Factor

source code and in the Joy examples on the Joy website.



 > Perhaps we could use a name other than 'yield'. My game library already 

> contains a word 'yield', with a different meaning. While vocabularies 

> will prevent the two names from clashing, it could still get confusing :)



 
"suspend" is a common name for this. Or maybe gen-yield?



Chris.

-- 

  Chris Double

  chris.double@...