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Topics - dukester

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#21
newLISP in the real world / Where should user-developed modules live?
April 16, 2009, 11:21:01 AM
I see that the modules shipped with newLISP live in:



/usr/share/newlisp/modules/...



Should I use the above directory for "contributed" modules or make a home for the in my $HOME? TIA...
#22
newLISP in the real world / Math operator in a symbol
April 14, 2009, 05:12:46 PM
hi...



it's been awhile...



Need help with this code:



(print "Enter the 1st number: ")

(set 'num1 (int (read-line)))

(print "Enter the 2nd number: ")

(set 'num2 (int (read-line)))

(print "Enter an operator [+ - * /]: ")

(set 'op (read-line))

;(print op)

(set 'result (op num1 num2))

result



I get:



Enter the 1st number: "Enter the 1st number: "

5

5

Enter the 2nd number: "Enter the 2nd number: "

6

6

Enter an operator [+ - * /]: "Enter an operator [+ - * /]: "

*

"*"



ERR: string index out of bounds in function set

>



Some clues, please. TIA....
#23
Anything else we might add? / Vim compiler plugin
September 03, 2007, 05:22:46 AM
Is anybody here using a compiler plugin file with Vim? I've read the Vim docs but somehow I can't get my plugin hack to work.



I like using Vim because I then have a consistent development environment across three platforms. TIA...
#24
Anything else we might add? / Catch and Throw
August 30, 2007, 06:09:03 AM
hey...



given the following snippet:



(catch

 (for (i 0 9)

   (if (= i 5)

     (throw (string "i was " i ))

   )

   

   (print i " ")

 )

)



How do I get the "throw" message to appear on my screen?



I tried:



(println (throw (string "i was " i )))



with no success. TIA...
#25
Anything else we might add? / coding style -- parentheses placement
August 28, 2007, 06:41:53 AM
Hi all....



Is it "good" style to write:



(set 'counter 1)

(map  (fn (i)

............(println "Element " counter ": " i)

............(inc 'counter)

..........)

..........(sequence -5 5)

)



instead of:



(set 'counter 1)

(map  (fn (i)

...........(println "Element " counter ": " i)

...........(inc 'counter))

...........(sequence -5 5))



NB. I'm using ........ above to preserve spacing



TIA....
#26
Anything else we might add? / p73 Introduction to newLISP
August 26, 2007, 10:14:21 AM
p73's topic is "6 Apply and map: applying functions to lists"



In part it says:



 Since we're holding the data in a symbol called data, we could try this:



(add data)

value expected in function add : data



but no, this doesn't work, because add wants numbers to add, and neither does this:



(add data)

value expected in function add : data





The two examples above seem identical to me. What did I miss?

--

dukester
#27
Anything else we might add? / CGI module available?
August 19, 2007, 05:57:40 AM
I'd like to use newLISP to write CGI apps with SQL database backends.



Is there a newLISP library that deals exclusively with CGI support -- something like CGI.pm  or its predecessor cgilib.pl?



I'll have to write one if such doesn't yet exist. TIA...
#28
Anything else we might add? / illegal parameter type in function set : 1
August 17, 2007, 10:11:18 AM
Hi...



I cannot get the following example to work:



(set 'data (1 1 2 2 2 2 2 2 2 3 2 4 4 4 4) )

(unique data)

(println data)



I keep on getting the subject error -- yet the example is out of  "Introduction to newLISP" - except for the (println .. ) line.

What am I missing? TIA...
#29
Anything else we might add? / catch and throw functions
August 14, 2007, 09:00:29 PM
Hey...



on p19 of "Introduction-to-newLISP" the following example is given:



(catch

  (for (i 0 9)

    (if (= i 5) (throw (string "i was " i)) )

    (print i " ")

  )

)



For some reason, the above does not print "i was 5", yet it does print the correct output. What am I missing? TIA...

--

dukester
#30
Anything else we might add? / REPL behavior
July 25, 2007, 06:09:58 PM
i'm new to newlisp! Currently reading "newlisp in 21 minutes" as an intro.



(println "Hello World!")



prints twice at the newlisp console because:



REPL prints it  once

println prints it a second time



Is this a correct interpretation of whats going on? TIA...

--

dukester
#31
newLISP in the real world / Is there an ideal programming cycle for newLISP?
May 08, 2007, 10:29:11 AM
Hey all.....



I'm new to newLISP! I'm wondering if there's an ideal way to program in newLISP? With some other languages that I've used, I typically have to windows open:

1. vim editor

2. compiler



I edit my source code in one window; ALT TAB to the next window; UP ARROW for the latest CLI command (i.e. newLISP whatever.lsp); program output; ALT TAB to editor.



Is that what you guys do? I realize that some editors have the capability of piping the the current file  to a pre-defined compiler. Sometimes setting these up can be a PITA ;)



Anyway, TIA for any pointers/suggestions/comments.L8r...
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