[colug-432] Great moments in computer science

[Steve VanSlyck]

In words of one syllable, what is basically the problem with global variables? Is it simply that they're open to be changed by anything in the system?

On June 3, 2015 9:17:49 AM EDT, Rick Troth <rmt at casita.net> wrote:
>On 06/02/2015 03:38 PM, R P Herrold wrote:
>>
>http://www.safetyresearch.net/blog/articles/toyota-unintended-acceleration-and-big-bowl-%E2%80%9Cspaghetti%E2%80%9D-code
>>
>> Toyota had more than 10,000 global variables.
>
>There was a discussion on LinkedIn about the (lack of) code quality in
>embedded systems. The thread was started by a guy outside of Cleveland
>who owns a firmware company.
>
>> “And in practice, five, ten, okay, fine. 10,000, no, we're done. It
>is
>> not safe, and I don't need to see all 10,000 global variables to know
>> that that is a problem,” Koopman testified.
>>
>> -- Russ herrold
>
>I've seen global variable abuse in commercial code. (not just embedded)
>
>I am shocked to have encountered "go global" thinking among
>professional
>software developers. Kind of wonder if some aspects of object oriented
>design are knee jerk reaction the other way.
>
>-- R; <><
>
>
>
>
>
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