Good day -
I'd still love to hear some explanation about how
the global '(pico~args)' symbol gets blown out
by a function parameter named 'args', not within
that function, but within a function it calls.
Also, how does one define new piLog Predicates ?
I'm trying to create a Database of APKs :
(class +APK +Entity)
# APK POC Package Database Class
(rel apk (+Need +Idx +String)) # APK Path
(rel app (+Need +Idx +String)) # APK Package
(rel aid (+Need +Idx +String)) # APK Application ID
(rel ino (+Need +Idx +Number)) # FS Inode of APK on SharePoint
filesystem (UUID)
(rel flv (+Need +Idx +String)) # APK Build Flavor
(rel bty (+Need +Idx +String)) # APK Build Type
(rel vrn (+Need +Idx +Number)) # APK VersionCode
(rel vrs (+Need +Idx +String)) # APK VersionName
(rel gin (+Idx +String)) # APK GIT Info String
(rel dbg (+Idx +Bool)) # APK has Debug Logging enabled
(rel blt (+Need +Idx +Number)) # APK BuildTime
(rel bls (+Need +Idx +String)) # APK BuildTimeString
(rel ctm (+Need +Idx +Number)) # APK Creation Time
(rel mtm (+Need +Idx +String)) # APK Modification Time
(rel AB> (*Idx +Number)) # APK MinSdkVersion (Android ABI #)
(rel AB< (*Idx +Number)) # APK MaxSdkVersion (Android ABI #)
(rel AB@ (*Idx +Number)) # APK TargetSdkVersion (Android ABI #)
(rel AB$ (*Idx +Number)) # APK CompileSdkVersion (Android ABI #)
and define a query :
(de apks ( Flv Ver Blt Abi Mtm )
(if (or (not (bool Flv)) (not (str? Flv))
(not (bool Ver)) (not (num? Ver))
(not (bool Blt)) (not (num? Blt))
(not (bool Abi)) (not (num? Abi))
)
(throw (pack "apks: Invalid Parameters: flv:" (sym Flv) " vrn:" (sym
Ver) " Mtm:" (sym Mtm) " Abi:" (sym Abi)))
(if (not (bool Mtm))
(symbols '(APK pico)
(solve
(quote
@FLV Flv
@VER (cons Ver)
@BLT (cons Blt)
@AB> (cons NIL Abi)
@AB< (cons Abi)
(select (@APK)
((flv +APK @FLV)
(vrn +APK @VER)
(blt +APK @BLT)
(AB> +APK @AB>)
(AB< +APK @AB<)
)
(same @FLV @APK flv)
(range @VER @APK vrn)
(range @BLT @APK blt)
(range @AB> @APK AB>)
(range @AB< @APK AB<)
)
) @APK
))
(symbols '(APK pico)
(solve
(quote
@FLV Flv
@VER (cons Ver)
@BLT (cons Blt)
@AB> (cons NIL Abi)
@AB< (cons Abi)
@MTM (cons Mtm)
(select (@APK)
( (flv +APK @FLV)
(vrn +APK @VER)
(blt +APK @BLT)
(mtm +APK @MTM)
(AB> +APK @AB>)
(AB< +APK @AB<)
)
(same @FLV @APK flv)
(range @VER @APK vrn)
(range @BLT @APK blt)
(range @MTM @APK mtm)
(range @AB> @APK AB>)
(range @AB< @APK AB<)
)
) @APK
))
)
)
)
to select APKs which :
o have a given 'flv' (flavor) attribute == Flv
o have a version >= Ver
o have a min api # <= Abi
o have a max api # >= Abi
o have a build time >= Blt
o have a modification time >= Mtm
but the above query always returns NIL , I think because
many APKs do not specify any 'maxSdkVersion', so get
'AB<' set to 0 :
I want to define a piLog Predicate that says:
(or ( (=0 @APK AB<) (range @AB< @APK AB<))
how would I do this?
Thanks, Best Regards,
Jason
On 07/05/2022, Jason Vas Dias <[email protected]> wrote:
> Good day Alex, picoLisp list -
>
> Why does declaring a parameter named 'args', in a function that does
> NOT use the '(args)' call, break things severely ?
>
> I had a function that does NOT use the built-in 'args, but which
> declared a parameter named 'args :
>
> (de a ( fun data args )
> (let
> ( (flg list x) args ) # destructuring bind
> (prog ...
> # eventually, fun gets called with unpacked args:
> (fun data flg list x)
> )
> )
> )
>
> Then eventually 'fun calls a function that calls '(args) :
> '(request!
> '(+myDbCls) ...
> )
> which DOES use args, at which point I got an error:
>
> !? ((0 NIL 16661165511231956559 (15935676839705835219
> (12638994734423517827 ...
> 0 -- Variable expected
>
> Renaming the parameter 'ars (or 'as :-) ) fixed the problem.
>
> Why ?
>
> I thought parameters and '(let ..) variables are in their own
> dynamic lexical scope, so that even if the 'args call is hidden
> in the 'a function, if 'a calls another function 'fun, and that
> calls a function which calls 'request!, the binding of 'args
> in request cannot possibly be affected by the binding of 'args
> in 'a. This turns out to be incorrect ! Where am I going wrong ?
>
> This took me a LONG time to find. My only clue was that 'list does
> look like :
> ((0 NIL 16661165511231956559 (15935676839705835219 (12638994734423517827
> ...
>
> Any suggestions as to exactly how the binding of 'args in 'a gets
> called by 'request! would be much appreciated.
>
> Thank You & Best Regards,
> Jason
>
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