Templates for DRY code

[codephantom]

On Saturday, 6 January 2018 at 01:33:11 UTC, Ali Çehreli wrote:
> One solution is to wrap ~= in a function template. Now the 
> conversion is automatically made to the element type of the 
> array:
> ...
> .....
> I think append() could be a part of std.array but I can't find 
> anything like that in Phobos.
>
> Ali

The problem with this, in my opinion, is that your template 
'append' is doing a conversion behind the scenes..ie. I wouldn't 
know that 'append' actually means 'convert & then append'.

When I read:

  double[] a;
  string s = "1.2";
  a.append(s);

I think to myself...wtf is going on here? How can you append a 
string to an array of doubles?

That's when I'd have go and find the append template and work out 
what it is really doing.