Re: cols t vs key flip value t

[Laura]

Perhaps the author was trading memory for speed?

q)t:flip(`$'.Q.a)!26 10000000#26000000?1000 
q)(cols `t)~key flip value `t 1b 
q)ts:10000 cols `t 12 528 
q)ts:10000 key flip value `t 2 880

One of the loveliest aspects of working in q is how easy it is to experiment like this!