Thank you Alex. My work with CL lately has clearly been rubbing off on
me. I'll combat that with more picolisp thanks to your tip. What a
wonderful language to work in.
-David
On Mon, Mar 3, 2014 at 2:45 AM, Alexander Burger a...@software-lab.dewrote:
On Sun, Mar 02, 2014 at 05:38:20PM -0500, me wrote:
Please help point me in the right direction once again? What I'm
attempting to achieve is something like:
(div progress
(div '(progress-bar progress-bar-success
(role . progressbar)
(aria-valuenow . -79)
(aria-valuemin . -100)
(aria-valuemax . 100)
(style . width: 79%) )
(span sr-only 79% Nominal) ) )
What I have is:
(de make-progress-bar (bar-type width)
(div progress
(div '(`(,pack progress-bar progess-bar- ,bar-type)
(role . progressbar)
(aria-valuenow . `(,pack ,width))
(aria-valuemin . -100)
(aria-valuemax . 100)
(style . `(,pack width: ,width %)) )
(span sr-only `(,pack ,width % Nominal)) ) ) )
What is the idiomatic way to manipulate text such that I can dynamically
generate different types of progress bars? The idea being that I could
use
different color coded static progress bars as a simple form of charting
data.
The problem with the solution above is that the backquote has a meaning
in PicoLisp different from that in CL. It is a read macro, not a
pattern-filler at runtime. Same goes for the comma.
Passing a list dynamically at runtimes means that it must be built at
runtime. This should work:
(de make-progress-bar (Bar-type Width)
(div progress
(div
(list
(pack progress-bar progress-bar- Bar-type)
'(role . progressbar)
(cons 'aria-valuenow Width)
'(aria-valuemin . -100)
'(aria-valuemax . 100)
(cons 'style (pack width: Width %)) )
(span sr-only Width % Nominal) ) ) )
(make-progress-bar success 79)
You might also take a look at 'fill' (which is a bit similar to the CL
backquote function) to build the list, but that's a little more
involved in this case:
(de make-progress-bar (Bar-type @Width)
(let
(@B (pack progress-bar progress-bar- Bar-type)
@W (pack width: @Width %) )
(div progress
(div
(fill
'(@B
(role . progressbar)
(aria-valuenow . @Width)
(aria-valuemin . -100)
(aria-valuemax . 100)
(style . @W) ) )
(span sr-only @Width % Nominal) ) ) ) )
(make-progress-bar success 79)
The effect is the same in both cases.
♪♫ Alex
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