[Jprogramming] Just for fun, verb cross

[bob therriault]

That is lovely Arie,

It is that kind of elegance that I was chasing with my rougher attempts. 

Using the (+.|.) hook simplifies (|.+.]) precisely and the {" 0 1  combined with ' '&,. means that the selection of the string becomes a choice in each row of displaying either the corresponding element of the string or a blank. 

Cheers, bob

On 2012-12-10, at 1:11 AM, Aai wrote:

>  ((+.|.)@={"0 1 ' '&,.)'abcde'