Worst ideas/features in programming languages?

[Basile B.]

On Monday, 15 November 2021 at 14:09:53 UTC, Paul Backus wrote:
> On Monday, 15 November 2021 at 14:02:42 UTC, Imperatorn wrote:
>>
>> What's wrong about retro? Too retro :D
>
> std.range.retro is honestly just a bad name. It should have 
> been `reversed`, or maybe `reverser`.

That reverser thing could have been a builtin property e.g 
`.reverser`, problem is that the expression that gives a foreach 
range 
(https://dlang.org/spec/statement.html#foreach-range-statement) 
is a bit degenerated for now:

   `LwrExpression .. UprExpression`

is actually not an expression at all thus

   `(LwrExpression ..UprExpression).reverser`

cant work. But Ideally D could get rid of that `foreach_reverse` 
keyword with a property.

```d
foreach (i; (0 .. length).reverser){}
foreach (e; elems.reverser){}
```

Off topic side node : the old [DIP 
58](https://wiki.dlang.org/DIP58) shows that the idea to have the 
`..` D operator is not new but apparently the case of simplifying 
`foreach` was not a goal.