Re: [Factor-talk] db.tuples and boolean types
I tried this and it seems that 0 is treated as t. I guess because 0 is
not f. I think I might have to use an INTEGER instead of a BOOLEAN
type and that way I can select for 0 and 1.
Thanks.
On 14 June 2011 16:15, Fred Alger wrote:
> I haven't tried this, but you might try passing a value that will get
> converted to FALSE at the database level, for example:
> [ T{ book { sold 0 } } select-tuples ] with-books-db
>
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[Factor-talk] db.tuples and boolean types
Hi,
How do you select-tuples from a db with a slot set to f? The help says
that "A SQL query is constructed from the slots of the exemplar tuple
that are not f." So for example the following won't work:
[ T{ book { sold f } } select-tuples ] with-books-db
Do you have to use two slots, sold and unsold, and select T{ book {
unsold t } }? Is there some other way that still lets you use
select-tuples?
Thanks,
Tadhg.
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Re: [Factor-talk] sqlite performance question
That's great. It takes 0.3 seconds now. Thanks for the help. On 21 April 2011 22:59, Andrey Onymov wrote: > Oh, realized there is with-transaction word only after sending the message. > So it becomes > > : insert-test ( -- ) > [ > sqltest recreate-table > [ 100 [ sqltest new insert-tuple ] times ] with-transaction > ] with-sqltest-db ; > > On Fri, 22 Apr 2011 03:52:46 +0600, Andrey Onymov > wrote: > >> : insert-test ( -- ) >> [ >> sqltest recreate-table >> begin-transaction >> 100 [ sqltest new insert-tuple ] times >> commit-transaction >> ] with-sqltest-db ; > > -- > Fulfilling the Lean Software Promise > Lean software platforms are now widely adopted and the benefits have been > demonstrated beyond question. Learn why your peers are replacing JEE > containers with lightweight application servers - and what you can gain > from the move. http://p.sf.net/sfu/vmware-sfemails > ___ > Factor-talk mailing list > Factor-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/factor-talk > -- Fulfilling the Lean Software Promise Lean software platforms are now widely adopted and the benefits have been demonstrated beyond question. Learn why your peers are replacing JEE containers with lightweight application servers - and what you can gain from the move. http://p.sf.net/sfu/vmware-sfemails ___ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
[Factor-talk] sqlite performance question
It takes about 6 seconds to insert 100 records into a sqlite db on my
Linux x64 system. Is sqlite normally that slow?
Thanks,
Tadhg
Here is the code I used:
USING: db db.sqlite db.tuples db.types ;
TUPLE: sqltest id ;
sqltest "SQLTEST" {
{ "id" "ID" +db-assigned-id+ }
} define-persistent
: with-sqltest-db ( quot -- )
"sqltest.db" swap with-db ; inline
: insert-test ( -- )
[
sqltest recreate-table
100 [ sqltest new insert-tuple ] times
] with-sqltest-db ;
[ insert-test ] time
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Re: [Factor-talk] cond-case or similar word
Thanks, that's great.
On 19 April 2011 23:14, Martial Boniou wrote:
> Hi,
>
> I did a quick hack for this:
>
> MACRO: cond-case ( assoc -- )
> [ dup callable? not
> [
> [ first '[ dup @ ] ]
> [ second '[ drop @ ] ] bi 2array
> ]
> [ '[ drop @ ] ] if
> ] map '[ _ cond ] ;
>
> I guess someone can do a better code by coding a more specific cond.
>
> my 2 cents...
>
> At Tue, 19 Apr 2011 20:49:51 +0100,
> "Tadhg O'Meara" wrote:
>>
>> I'm looking for a word that's like cond but doesn't need all the dups
>> and drops for the simple case where you want to check various
>> properties of the object on the stack and call an appropriate
>> quotation. So instead of
>>
>> {
>> { [ dup 0 > ] [ drop "positive" ] }
>> { [ dup 0 < ] [ drop "negative" ] }
>> [ drop "zero" ]
>> } cond
>>
>> I could use
>>
>> {
>> { [ 0 > ] [ "positive" ] }
>> { [ 0 < ] [ "negative" ] }
>> [ "zero" ]
>> } cond-case
>>
>> I tried to write a cond-case word that adds the necessary dups and
>> drops to a cond assoc but this results in a error.
>>
>> USING: arrays combinators kernel quotations sequences ;
>>
>> : cond-case ( assoc -- )
>> [ dup callable? not
>> [
>> [ first [ dup ] prepose ]
>> [ second [ drop ] prepose ] bi 2array
>> ]
>> [ [ drop ] prepose ] if
>> ] map cond ;
>>
>> Error: Cannot apply “cond” to a run-time computed value
>> It also says cond is a macro.
>>
>> Any ideas?
>>
>> Thanks,
>> Tadhg
>>
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>
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>
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[Factor-talk] cond-case or similar word
I'm looking for a word that's like cond but doesn't need all the dups
and drops for the simple case where you want to check various
properties of the object on the stack and call an appropriate
quotation. So instead of
{
{ [ dup 0 > ] [ drop "positive" ] }
{ [ dup 0 < ] [ drop "negative" ] }
[ drop "zero" ]
} cond
I could use
{
{ [ 0 > ] [ "positive" ] }
{ [ 0 < ] [ "negative" ] }
[ "zero" ]
} cond-case
I tried to write a cond-case word that adds the necessary dups and
drops to a cond assoc but this results in a error.
USING: arrays combinators kernel quotations sequences ;
: cond-case ( assoc -- )
[ dup callable? not
[
[ first [ dup ] prepose ]
[ second [ drop ] prepose ] bi 2array
]
[ [ drop ] prepose ] if
] map cond ;
Error: Cannot apply “cond” to a run-time computed value
It also says cond is a macro.
Any ideas?
Thanks,
Tadhg
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Re: [Factor-talk] New here
For me this FAQ was a helpful intro to the ideas behind stack languages: http://www.latrobe.edu.au/philosophy/phimvt/joy/faq.html 2009/6/18 Emeka > Hello All, > > I'm new here and I would like to know where to start? i need introductory > materials and summary of what Factor is? > > Regards, > Emeka > > > -- > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > ___ > Factor-talk mailing list > Factor-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/factor-talk > > -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects___ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
Re: [Factor-talk] best way to search the documentation?
Thanks. One reason I've been using FUEL is that I prefer a dark background. Is it possible to change the background/foreground colors of the UI? I'm using Linux. 2009/5/14 Slava Pestov : > Hi, > > In the UI listener, press F1 to open the help browser. Then type > something to search for in the top-left 'search' field. > > Slava > > On Thu, May 14, 2009 at 2:42 PM, Tadhg O'Meara wrote: >> Hi, >> >> What is the best way to search the documentation? I was looking for an >> infinity number and only found it after using grep from the command >> line which I found a bit messy and hard to read. >> >> I'm using FUEL but I'm new to emacs as well so maybe there's some >> emacs-fu that I'm not aware >> of. If there's an UI based method I'd be interested in that too. >> >> Thanks, >> Tadhg. >> >> -- >> The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your >> production scanning environment may not be a perfect world - but thanks to >> Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 >> Series Scanner you'll get full speed at 300 dpi even with all image >> processing features enabled. http://p.sf.net/sfu/kodak-com >> ___ >> Factor-talk mailing list >> Factor-talk@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/factor-talk >> > > -- > The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your > production scanning environment may not be a perfect world - but thanks to > Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 > Series Scanner you'll get full speed at 300 dpi even with all image > processing features enabled. http://p.sf.net/sfu/kodak-com > ___ > Factor-talk mailing list > Factor-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/factor-talk > -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
[Factor-talk] best way to search the documentation?
Hi, What is the best way to search the documentation? I was looking for an infinity number and only found it after using grep from the command line which I found a bit messy and hard to read. I'm using FUEL but I'm new to emacs as well so maybe there's some emacs-fu that I'm not aware of. If there's an UI based method I'd be interested in that too. Thanks, Tadhg. -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com ___ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
