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A comment on Ask HN: Why did you quit learning programming?. Parent comment

Re:Ask HN: Why did you quit learning programming? by JonChesterfield on Tuesday July 12, 2022 @06:27PM (#32076526)
What do you mean by 0!=1 here? It reads as the integers zero and one are not equal, which is true. I'm struggling to guess what established rules that could break.
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Re:Ask HN: Why did you quit learning programming? by rafamaddd on Tuesday July 12, 2022 @07:15PM (#32077023)
> It reads as the integers zero and one are not equal, which is true

That's not what 0!=1 means in math, the ! means factorial, which is to multiply by decreasing positive integers. Here's the definition:

n! = n x (n -1) x (n - 2) x . . . x 2 x 1

So, for people starting to learn calculus/math, being told that 0!=1 makes no sense

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Re:Ask HN: Why did you quit learning programming? by 3836293648 on Tuesday July 12, 2022 @08:44PM (#32077693)
And that's why we need spacing. 0 != 1 is very different from 0! = 1
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Re:Ask HN: Why did you quit learning programming? by dc-programmer on Wednesday July 13, 2022 @12:27AM (#32079047)
Right I forgot my audience
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Re:Ask HN: Why did you quit learning programming? by JonChesterfield on Tuesday July 19, 2022 @05:30PM (#32158246)
Ah. ! for factorial was not an obvious parse. I suspect it has alternative meanings in mathematics as well.
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