[Issue 2006] Appending empty array using ~= doesn't work

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2006





------- Comment #1 from wbaxter at gmail.com  2008-04-18 14:46 -------
That's funny I was just about to file this one myself a couple of days ago, BUT
then I decided that it probably isn't really a bug.

[] could be an empty array of any type.  So the compiler is interpreting it as
an empty string[][], not an empty string[].  You have a T[], you concat an
empty T[],  your original array isn't supposed to change.

I will agree it's not the most useful of behaviors, and the doc could certainly
be clearer about what will happen in such a case, but I don't think its
actually a bug.  It's just the compiler interpreting [] in a not-so-useful
manner.  If you type a literal "~= []" in the code then clearly you want
something to happen.

The workaround is to use "~= [[]]" instead.


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