[rkward-devel] [rkward-cvs] SF.net SVN: rkward-code:[4897] trunk/rkward/packages/rkwarddev

[Thomas Friedrichsmeier]

Hi,

On Thursday 16 October 2014 20:40:56 meik michalke wrote:
> speaking of non-trivial... can you hint me to to some documentation of how
> to get all columns out of one row of the optionset? i find it hard to
> understand from the existing examples, but i get the idea it has to to with
> "for" loops.

yes. The storage inside the optionset is column-based (which is rather 
unavoidable, technically). So the typical pattern in js is:

col_a = getList ("set.col_a");
col_b = getList ("set.col_b");
col_c = getList ("set.col_c");

for (var i = 0; i < col_a.length; ++i) {
	echo ("coolfun (", col_a[i] + ", " + col_b[i] + "," + col_c[i] + ")\n");
}

> i would like to implement some kind of prototypic helper function in
> rkwarddev. unless it turns out to be impossible ;-)

Well, it should be quite possible to create a JS function that converts from 
column-based to row-based representation, given a list of column-names of 
interested (which may of not be all columns in the set!). I'll leave that as 
an exercise to the reader ;-).

Regards
Thomas
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