J primitives should raise NaN errors instead of returning calculated NaNs (or 
crashing!).

-Dan

Please excuse typos; composed on a handheld device.

> On Oct 15, 2013, at 4:37 PM, Pascal Jasmin <[email protected]> wrote:
> 
> _ +. _ does not lock up, but this does too (j6-32):
> 
> 1 +. _.
> 
> 
> ----- Original Message -----
> From: Devon McCormick <[email protected]>
> To: J-programming forum <[email protected]>
> Cc: 
> Sent: Tuesday, October 15, 2013 4:17:57 PM
> Subject: [Jprogramming] Don't try this at home!
> 
> This locks up the three versions of J on which I've tried it:
> 
>    _+._.
> 
> The interesting things you uncover with random code generation...
> 
> -- 
> Devon McCormick, CFA
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