I've been thinking about the paren representation too.
If it were possible to remove the parens yet leaving its
map brackes, it would provide even better combination of
structure and clarity. Here it is illustrated manually.
I don't yet have an idea how it could be automated.
Here I use "fetch" from S: as an example.
map 5!:5<'fetch' NB. linear map
>@({&>/)@(<"0@|[EMAIL PROTECTED] , <@])"1 _
└────┘ └──────────────┘
map 5!:6<'fetch' NB. paren map with paren removed
>@({&>/)@(<"0@|[EMAIL PROTECTED] , <@])"1 _
└─┘
└─┘ └────┘
└────┘ └──────┘ └─┘
└──────┘ └──────────────┘
└───────────────────────┘
NB. original paren map
map 5!:6<'fetch'
((>@(({&>)/))@((((<"0)@|.)@[) , (<@])))"1 _
└───┘
└───┘ └────────┘
└──────┘ └────────────┘ └───┘
└──────────┘ └──────────────────────┘
└─────────────────────────────────────┘
Also map can be applied to explicit definitions:
;<@map;._2,&LF 5!:5<'map'
3 : 0
(9!:6 '') map y
└───────┘
:
b=. (i.->./t) </ t=. +/\ (=/\''''~:y) * 1 _1 0 {~ '()' i. y
└───────┘ └──────────┘
y , (2 #.\"(1) 0,.b) { ' ',6 8 10{x
└─┘
└──────────────┘
)
> From: Roger Hui <[EMAIL PROTECTED]>
>
> map=: 3 : 0
> (9!:6 '') map y
> :
> b=. (i.->./t) > y , (2 #.\"(1) 0,.b) { ' ',6 8 10{x
> )
>
> f=: [: (#~ (0 ~: 1&{"1))@; <@(0&{ ,. 1&{ ([EMAIL PROTECTED] ,. (] +//. ["0)
> ,. [ * [EMAIL PROTECTED])
> 2&}.)"1
>
> map 5!:5 <'f'
> [: (#~ (0 ~: 1&{"1))@; <@(0&{ ,. 1&{ ([EMAIL PROTECTED] ,. (] +//. ["0) ,. [
> * [EMAIL PROTECTED]) 2&}.)"1
> └──────────┘
> └──────────┘ └───────────────────────────────┘
> └───────────────┘ └─────────────────────────────────────────────────┘
>
> map ' ~:/\ @ (''())))'' = ])'
> ~:/\ @ ('())))' = ])
> └───────────┘
>
> map 5!:5 <'assert'
> 0 0"_ $ 13!:8^:((0: e. ])`(12"_))
> └───────┘ └────┘
> └────────────────┘
> map 5!:6 <'assert'
> (0 0"_) $ ((13!:8)^:(((0:) e. ])`(12"_)))
> └──┘
> └─────────┘ └────┘
> └─────┘ └──────────────────┘
> └─────┘ └─────────────────────────────┘
>
>
>
> ----- Original Message -----
> From: Raul Miller
> Date: Wednesday, July 30, 2008 9:32
> Subject: Re: [Jgeneral] tracing tacit definition execution
> To: General forum
>
> > On 7/30/08, Roger Hui wrote:
> > > map=: 3 : 0
> > > (9!:6 '') map y
> > > :
> > > b=. (i.->./t) > > > y , (2 #.\"(1) 0,.b) { ' ',6 8 10{x
> > > )
> >
> > This is very nice, however:
> > map 'b=. (i.->./t) > > b=. (i.->./t) > >
> > └───────┘ └┘
> >
> > And parenthesis within quotes can be unbalanced and
> > can appear between balanced parenthesis.
> >
> > Quoted parenthesis could be eliminated by replacing '()' i. with
> > something like ('()'&i. >. 2 * ~:/\@:=&'''')
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