IRC logs for #openttd on OFTC at 2021-12-08
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04:54:09 <Eddi|zuHause> and all this time i thought it's christmas, not bodmas....
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09:31:17 <Timberwolf> A number that's a clear and obvious power of 2? You'd have the computer engineers of the '60s recoiling in horror.
09:31:40 <Timberwolf> Word lengths should be decided by throwing darts blindfolded. 18! 36! 7.5!
09:33:16 <SpComb> I was surprised that "hextet" means a 16-bit word / two octets / four nibbles, and not a 6-bit word like I expected
09:34:34 <SpComb> I suppose you can just use "sextet" instead
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10:14:32 <Eddi|zuHause> why would unit names be consistent :)
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17:23:37 <glx> tempted to deny the second one
17:23:50 <LordAro> well we can't accept both :p
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20:13:39 * andythenorth still debating bodmas
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21:41:36 <Eddi|zuHause> christmas. not bodmas.
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21:59:58 <FLHerne> I remember it was BIDMAS when I learned it
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22:00:54 <FLHerne> 'Indices' rather than 'Order'
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22:16:29 <andythenorth> yeah child #1 has been explaining this to me
22:16:45 <andythenorth> also it's BI(D,M)(A,S)
22:17:58 <andythenorth> so it's kind of lolz that the mnemomic for 'how to solve ambiguously written mathematical expressions'
22:18:16 <andythenorth> requires explicit formatting to make it usable
22:19:05 <andythenorth> the correct mnemomic should be DEAX
22:19:15 <FLHerne> also, in practice it's just easier to skim-read code when it has parens
22:19:18 <andythenorth> Don't evaluate ambiguous expressions
22:19:38 <andythenorth> the current reddit example has an additional flaw I found
22:19:45 <FLHerne> Even if it's officially unambiguous, it takes longer to read
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22:20:12 <andythenorth> ^ this one, amongst other problems, suffers from "why the fuck include some parentheses but not others"
22:20:36 <andythenorth> and I absolutely refuse to read that as (6/2) * (1+2) which is what BODMAS requires
22:21:03 <andythenorth> I am curious if I can argue with the school maths teacher
22:21:08 <andythenorth> probably won't persuade them
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22:25:17 <FLHerne> Yeah, n() is higher precedence than any of the operators
22:25:59 <andythenorth> the rule seems to drive a bus through the rules of algebraic substitution
22:26:08 <FLHerne> I don't know if 2(1+2)² would be 18 or 36 though
22:26:42 <milek7> FLHerne: that's 18 definitely
22:26:44 <FLHerne> If you follow your rule, yes
22:26:54 <andythenorth> 4 schools, 1 6th form college, 1 engineering degree, I was never taught BODMAS
22:26:55 <FLHerne> but n() clearly doesn't follow your rule :p
22:27:13 <andythenorth> repeatedly I was taught to not evaluate ambiguous expressions
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22:27:18 <FLHerne> milek7: I shall bear this in mind before stabbing the first person to write it in code
22:27:18 <andythenorth> serious parallel universe
22:27:36 <FLHerne> I learned BIDMAS in year 4, I think?
22:27:42 <andythenorth> apparently at some levels of schooling, people are taught the left-to-right rule
22:27:53 <andythenorth> which is why it's easy to make a facebook poll about it viral
22:28:04 <andythenorth> it trivially divides people with different levels of education
22:28:14 <andythenorth> both have 'rules'
22:28:17 <andythenorth> so lots of engagement
22:28:19 <FLHerne> and then in sixth form electronics I was told not to use ambiguous expressions because it's needlessly confusing :p
22:28:35 <andythenorth> yair my 6th form physics teacher was virulently against them
22:28:45 <andythenorth> I don't see how you do actual physics and stuff with BIDMAS and friends
22:29:00 <FLHerne> I can't remember a level of education where left-to-right was taught
22:29:00 <andythenorth> rearranging equations and stuff just seems needlessly hard
22:29:20 <andythenorth> left-to-right is taught at 'addition and subtraction' level
22:29:27 <andythenorth> some people never progress beyond that
22:29:38 <FLHerne> Ok, but everyone goes to primary school
22:30:14 <andythenorth> so child #1 is learning BIDMAS, and is somewhat adept at maths (always top in class since starting school)
22:30:20 <milek7> again, I think this is a problem that doesn't exists in practice
22:30:31 <andythenorth> child #1 told me that left-to-right is a standard rule
22:30:37 <andythenorth> taught in school
22:30:54 <andythenorth> milek7 it's a problem that exists on facebook and reddit
22:31:07 <andythenorth> I just find it amusing
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23:50:04 <SpComb> is someone being graded on trick questions involving ambiguous expressions, oe where did this start?
23:51:11 <SpComb> I was taught mul/div before add/sub but never "BIDMAS"
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