[Jprogramming] Is variable defined

[Henry Rich]

ifdefined =: 0 <: [: 4!:0 <

     ifdefined 'xxx'

0

ifdefined 'ifdefined'

1


Henry Rich



On 3/10/2016 7:19 PM, Ryan Eckbo wrote:
> I seem to remember that there's a way to check whether a variable has 
> been defined or not,
> but I can't find the method.  Does anyone know?
>
> Thanks,
> Ryan
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