if(arr) now a warning

[ketmar via Digitalmars-d]

On Fri, 10 Apr 2015 12:53:43 +0000, ketmar wrote:

> this is good, as `if (arr.ptr)` is really confusing. yet i can't
> understand why don't rewrite it to `if (arr.length)` instead.

$#^%@$. i should really read the whole topic before writing answers.
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