Re: Less powerful 'str?
On Sat, Jun 17, 2017 at 05:39:15PM -0800, Christopher Howard wrote: > I think I found what I was looking for, modifying an example from the docs: > > : (mapcar pack (split (chop (line T)) " ")) Minor optimization: You can avoid the overhead of 'chop': (mapcar pack (split (line) " ")) > On 06/17/2017 02:35 PM, Joh-Tob Schäg wrote: > > Take a look at 'read. This does not solve the problem, because 'str' *is* 'read' internally, and therefore evaluates the read macros. > > You may need to 'eval the result. 'eval' is not needed, and in fact is what Christopher wanted to avoid (i.e. the evaluation triggered by the read macros) ♪♫ Alex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Re: Less powerful 'str?
I think I found what I was looking for, modifying an example from the docs:
: (mapcar pack (split (chop (line T)) " "))
go north
-> ("go" "north")
On 06/17/2017 02:35 PM, Joh-Tob Schäg wrote:
> Take a look at 'read.
> You may need to 'eval the result.
> If 'read does not suit your needs i wrote a tokenizer and parser but the
> source code is not yet ready fot publication
>
> Am 17.06.2017 23:42 schrieb "Christopher Howard"
> >:
>
> Hi list. I find that the 'str function is rather convenient for
> processing commands from the user, as it converts the input to list
> format, like in
>
> : (str (line T))
> go north
> -> (go north)
>
> However, it creates complications in allowing commands like:
>
> : (str (line T))
> `(+ 1 2 3)
> -> (6)
>
> and
>
> : (str (line T))
> "crash!
> EOF Overrun
> ?
>
> Is there another simple way to get the lists provided by 'str without
> the user this power to run code?
>
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Re: Less powerful 'str?
Take a look at 'read. You may need to 'eval the result. If 'read does not suit your needs i wrote a tokenizer and parser but the source code is not yet ready fot publication Am 17.06.2017 23:42 schrieb "Christopher Howard" < christopher.how...@qlfiles.net>: > Hi list. I find that the 'str function is rather convenient for > processing commands from the user, as it converts the input to list > format, like in > > : (str (line T)) > go north > -> (go north) > > However, it creates complications in allowing commands like: > > : (str (line T)) > `(+ 1 2 3) > -> (6) > > and > > : (str (line T)) > "crash! > EOF Overrun > ? > > Is there another simple way to get the lists provided by 'str without > the user this power to run code? > > -- > https://qlfiles.net > > -- > UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe >
