Rant after trying Rust a bit

[deadalnix via Digitalmars-d]

On Saturday, 25 July 2015 at 02:28:49 UTC, Jonathan M Davis wrote:
> On Saturday, 25 July 2015 at 01:22:15 UTC, Tofu Ninja wrote:
>> On Saturday, 25 July 2015 at 00:49:38 UTC, Walter Bright wrote:
>>> On 7/24/2015 2:27 PM, Tofu Ninja wrote:
>>> No it isn't. Google QueryInterface(). Nobody lists all the 
>>> interfaces at the top level functions, which is that Rust 
>>> traits and C++ concepts require.
>>
>> The only time you don't use the right interface for your needs 
>> is if you plan on casting somewhere down the line. But 
>> certainly there are people who don't do that, I for one feel 
>> it's bad practice to need to use casts to circumvent the type 
>> system like that.
>
> I confess that I've always thought that QueryInterface was a 
> _horrible_ idea, and that if you need to cast your type to 
> something else like that, you're doing something wrong. 
> *shudder* I really have nothing good to say about COM 
> actually...
>
> - Jonathan M Davis

Well yes and now. When you design is new and shinny, sure, that 
is a sign that somewhere it is broken. When you are patching a 
hundred of thousand line of code, you may not be able to get the 
refactoring in all at once in a realistic manner and need to 
build some debt. Hopefully, as the refactoring progress, these 
hacks are removed, but not having just makes cost of change 
prohibitive, which is bad.