About ten years I have been happy with J's infinity _ and its
behaviour with the primitives and dates presenting open time
intervals. Now J602 makes error (I have no idea why) that I find very
difficult to workaround in the existing code. For example time
interval starting today and no end defined can be represented with
two numbers 20080315 _. The conversion to J day numbers was easy in J601:
load 'dates'
todayno 0 100 100#:20080315 _
76044 _
but in J602:
load 'dates'
todayno 0 100 100#:20080315 _
|NaN error
| todayno 0 100 100 #:2.00803e7 _
The error is result from 0 100 100#:_
Any ideas how 0 100 100#:20080315 _ and similar lines should be
rewritten in J602 without NaN error ?
Anssi
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