found code skeleton, with 1 and 2 character whitelists (can be longer)
cocurrent 'jon'
NB. can't have all 3 @[& if you want to forbid ^:
NB. should run in context that limits space and time.
safe1 =: '''_0123456789+*-<>|;,#{}()]~'
safe2 =: 'u:';'x:';'}.';'}:';'" ';'":';'! ';'$ ';'= ';'^
';'^.
you can sanitize to white listed functions. I think I've posted this before,
but cannot find the code. The basics are J primitives, and select foreigns
without allowing assignment. J can self tokenize a sentence with ;:
On Tuesday, February 18, 2020, 03:17:23 p.m. EST, 'Jim Russell' via
J does not currently have facilities for tracking malicious user input
and ensuring that it's treated safely. (This is an open-ended issue.)
As a consequence, the developer must ensure that input from untrusted
users is sufficiently cleaned before it's used, or that J is executing
in a "safe" envi
Does the "do" approach involve risks like SQL injection risks? How does one
ensure that a user response doesn't include malicious J code?
> On Feb 18, 2020, at 1:34 PM, PMA wrote:
>
> Bob, Jimmy, Pascal --
> Just plain old Do fercrisake.
> Omg, I feel like an idiot!
> (Happy, o'course)
>
> Se
Oo, elegant!
I expect I'll be using this
Thanks again
On 02/18/2020 01:52 PM, 'robert therriault' via Programming wrote:
No worries, Pete
I may be misreading how you are using this, but does the following have any
application?
s=. 'test'
(s)=. 4
test
4
You can assign results
Oops, I inadvertently left out the definition of Cmn. (Odd.. I thought
I remembered copying that into my message.)
Anyways, it was really basic;
Cmn=: 2 :'m+n'
Thanks,
--
Raul
On Mon, Feb 17, 2020 at 11:18 AM Raul Miller wrote:
>
> So here's the deal with Henry's point 3:
>
>Cxmny=: 2
No worries, Pete
I may be misreading how you are using this, but does the following have any
application?
s=. 'test'
(s)=. 4
test
4
You can assign results to a variable within parentheses that is evaluated and
the assignment is to the value of the variable
Cheers, bob
> On Feb 18,
...with hyphens in the spaces, etc
On 02/18/2020 01:36 PM, PMA wrote:
Bob, Jimmy, Pascal --
Just plain old Do fercrisake.
Omg, I feel like an idiot!
(Happy, o'course)
See, I'll be using the quotes in one string
as the var NAME that this function's output
will be assigned to. A little cumbersom
Bob, Jimmy, Pascal --
Just plain old Do fercrisake.
Omg, I feel like an idiot!
(Happy, o'course)
See, I'll be using the quotes in one string
as the var NAME that this function's output
will be assigned to. A little cumbersome,
but hey...
Thanks again!
Cheers back!!!
Pete
On 02/18/2020 12:27 PM
not adding much but,
'2+2' ,&". '1+1'
4 2
On Tuesday, February 18, 2020, 12:30:27 p.m. EST, Jimmy Gauvin
wrote:
Another variant :
exec =: 4 : 0
:
('Left';x;". x),:'Right';y;". y
)
'1+1' exec '2+2'
┌─┬───┬─┐
│Left │1+1│2│
├─┼───┼─┤
│Right│2+2│4│
└─┴───┴─┘
On Tue, Fe
Another variant :
exec =: 4 : 0
:
('Left';x;". x),:'Right';y;". y
)
'1+1' exec '2+2'
┌─┬───┬─┐
│Left │1+1│2│
├─┼───┼─┤
│Right│2+2│4│
└─┴───┴─┘
On Tue, Feb 18, 2020 at 12:27 PM 'robert therriault' via Programming <
programm...@jsoftware.com> wrote:
> Hi Pete,
>
> Are you looking
Hi Pete,
Are you looking for ". (Do) https://code.jsoftware.com/wiki/Vocabulary/quotedot
".'1 + 1'
2
FUNCTION=: 4 : 0
smoutput x NB. output x string
smoutput y NB. output y string
x +&". yNB. Using + as the dyadic verb placeholder, equivalent to (". x) +
". y
)
'1+1' FUNCTION '2+
This question must be too clueless to ask,
but two hours with NuVoc leaves me still
wondering --
I need to write a function invocation with
its numeric x and y each in quotes as TEXT:
'1+1' FUNCTION '2+2'
I want the function then, after displaying
x and y, to remove their quotes and e
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