Re: why is there no setf in picolisp?
all right, thanks! On Thu, Jun 27, 2019 at 12:27 PM wrote: > So, reading Alex’s comments and also the definition of the “joke” `setf` > here: > > On Thu, 27 Jun 2019 10:29 -04:00, Mike wrote: > > https://github.com/picolisp/picolisp/blob/dev/misc/setf.l > > > informs me that the answer to Bruno’s question is: yes, the concept in > fact *does* exist in picolisp (by the use of its `set` primitive), > rendering such as a `setf` entirely unnecessary (and un-idiomatic as well). >
Re: why is there no setf in picolisp?
So, reading Alex’s comments and also the definition of the “joke” `setf` here: On Thu, 27 Jun 2019 10:29 -04:00, Mike wrote: > https://github.com/picolisp/picolisp/blob/dev/misc/setf.l informs me that the answer to Bruno’s question is: yes, the concept in fact *does* exist in picolisp (by the use of its `set` primitive), rendering such as a `setf` entirely unnecessary (and un-idiomatic as well).
Re: why is there no setf in picolisp?
https://github.com/picolisp/picolisp/blob/dev/misc/setf.l June 27, 2019 8:06 AM, "Bruno Franco" wrote: > Soo, yeah. I'm studying common lisp, and coming from picolisp setf confused > me at first. The > concept does not seem to appear on picolisp, and I wondered why its not there. > > The only reference I could find was this: > https://www.mail-archive.com/picolisp@software-lab.de/msg03604.html > > it mentions that it "violates the spirit of how lisp functions evaluate their > arguments", but no > more comment is made. > > I hope I'm forgiven if a flame war starts, but I'm trying to understand what > makes a good lisp. > > So, why is there no setf in picolisp? -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Re: why is there no setf in picolisp?
[setf (+ (** c 2) (+ (* -5 c) 6)) 0] ?! On Thu, Jun 27, 2019, 07:39 Alexander Burger wrote: > Hi Bruno, > > > So, why is there no setf in picolisp? > > The answer is simple: It does not make sense. > > PicoLisp is a pure interpreter, and what 'setf' does is setting the value > of > what the expression *would* return. I'm not fit in CommonLisp, but > >(setf (car X) 7) > > means to set the CAR of the cell pointed at by X to 7. > > So a compiler analyzes the argument (car X), and compiles > >(set X 7) # in PicoLisp > > Similarly, > >(setf (get 'X 'a) 7) > > compiles to > >(put 'X 'a 7) > > > There is a 'setf' function in PicoLisp (meant as a joke) in > >misc/setf.l > > ☺/ A!ex > > -- > UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe >
Re: why is there no setf in picolisp?
Hi Bruno, > So, why is there no setf in picolisp? The answer is simple: It does not make sense. PicoLisp is a pure interpreter, and what 'setf' does is setting the value of what the expression *would* return. I'm not fit in CommonLisp, but (setf (car X) 7) means to set the CAR of the cell pointed at by X to 7. So a compiler analyzes the argument (car X), and compiles (set X 7) # in PicoLisp Similarly, (setf (get 'X 'a) 7) compiles to (put 'X 'a 7) There is a 'setf' function in PicoLisp (meant as a joke) in misc/setf.l ☺/ A!ex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Re: why is there no setf in picolisp?
On Thu, Jun 27, 2019 at 05:11:45AM +, SuperSaiyanBlue wrote: > What does setf do that set or setq can't do? Nothing I think. It is just syntactic sugar :) ☺/ A!ex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Re: why is there no setf in picolisp?
What does setf do that set or setq can't do? On June 27, 2019 4:51:13 AM UTC, Bruno Franco wrote: >Soo, yeah. I'm studying common lisp, and coming from picolisp setf >confused >me at first. The concept does not seem to appear on picolisp, and I >wondered why its not there. > >The only reference I could find was this: >https://www.mail-archive.com/picolisp@software-lab.de/msg03604.html >it mentions that it "violates the spirit of how lisp functions evaluate >their arguments", but no more comment is made. > >I hope I'm forgiven if a flame war starts, but I'm trying to understand >what makes a good lisp. > >So, why is there no setf in picolisp? -- SuperSaiyan Blue Sent via email ;)
why is there no setf in picolisp?
Soo, yeah. I'm studying common lisp, and coming from picolisp setf confused me at first. The concept does not seem to appear on picolisp, and I wondered why its not there. The only reference I could find was this: https://www.mail-archive.com/picolisp@software-lab.de/msg03604.html it mentions that it "violates the spirit of how lisp functions evaluate their arguments", but no more comment is made. I hope I'm forgiven if a flame war starts, but I'm trying to understand what makes a good lisp. So, why is there no setf in picolisp?
