This thread on Hacker News terrifies me

tide tide at tide.tide
Sat Sep 1 12:57:26 UTC 2018


On Saturday, 1 September 2018 at 12:49:12 UTC, rikki cattermole 
wrote:
> On 02/09/2018 12:37 AM, tide wrote:
>> On Saturday, 1 September 2018 at 08:18:03 UTC, Walter Bright 
>> wrote:
>>> On 8/31/2018 7:28 PM, tide wrote:
>>>> I'm just wondering but how would you code an assert to 
>>>> ensure the variable for a title bar is the correct color? 
>>>> Just how many asserts are you going to have in your 
>>>> real-time game that can be expected to run at 144+ fps ?
>>>
>>> Experience will guide you on where to put the asserts.
>>>
>>> But really, just apply common sense. It's not just for 
>>> software. If you're a physicist, and your calculations come 
>>> up with a negative mass, you screwed up. If you're a 
>>> mechanical engineer, and calculate a force of billion pounds 
>>> from dropping a piano, you screwed up. If you're an 
>>> accountant, and calculate that you owe a million dollars in 
>>> taxes on a thousand dollars of income, you screwed up. If you 
>>> build a diagnostic X-ray machine, and the control software 
>>> computes a lethal dose to administer, you screwed up.
>>>
>>> Apply common sense and assert on unreasonable results, 
>>> because your code is broken.
>> 
>> That's what he, and apparently you don't get. How are you 
>> going to use an assert to check that the color of a title bar 
>> is valid? Try and implement that assert, and let me know what 
>> you come up with.
>
> If you have the ability to screenshot a window like I do, oh 
> one simple method call is all that required with a simple index 
> to get the color.
>
> But that isn't something I'd go test... Too much system-y stuff 
> that can modify it.

And you're putting that into production code? Cause that's the 
entire point of this topic :).


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