problem with isnan

[Charles Hixson via Digitalmars-d-learn]

On 11/11/2016 01:34 PM, John C via Digitalmars-d-learn wrote:
> On Friday, 11 November 2016 at 20:55:52 UTC, Charles Hixson wrote:
>> Thank you.  Unfortunately:
>> import    std.math;
>>         ...
>>     assert    (isNan (c.curActivation), "cell has unexpected 
>> curActivation: %s".format(c.curActivation));
>>
>> yields:
>> cell.d(292): Error: undefined identifier 'isNan', did you mean 
>> overloadset 'isnan'?
>
> It should be isNaN.
>
Ok, now it seems the same as std.math.isnan, (i.e., it works properly).  
On looking over the error messages more closely (just now) I noticed 
that the line number had now changed.  Whoops!  It just *LOOKED* like 
the error hadn't been fixed, where it had actually moved onto the next 
one.  The hint should have been that it was printing an integer 
value...I mean besides the changed line number.