| --- Log opened Wed Dec 09 00:00:07 2020 |
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| 02:42 | | * McMartin debugs a ZX Spectrum program from 1985 |
| 02:42 | <&McMartin> | I am unimpressed with this magazine's editorial policy~ |
| 02:43 | <@Reiv> | snrkwut |
| 02:44 | <&McMartin> | I don't know how much was "they didn't understand the program" and how much was "the author didn't fix anything" |
| 02:45 | <&McMartin> | But they published it as basically only working on the 1983-era machines and nothing later |
| 02:45 | <&McMartin> | True enough, but the reason for this was dumb, and they should have pushed on it, and if they had a proper technical editor I think by 1985 they would have been able to |
| 02:45 | <&McMartin> | In particular the keyboard input was getting interference from the microphone jack |
| 02:45 | <&McMartin> | That took some digging to find the right code but there weren't many changes for it |
| 02:46 | <&McMartin> | What however *should* have been caught was that there are three lines in order: |
| 02:46 | <&McMartin> | LET B = (big chunk of math) |
| 02:46 | <&McMartin> | IF (THING) THEN LET B=-1 |
| 02:46 | <&McMartin> | IF (NOT THING) THEN LET B=1 |
| 02:46 | <&McMartin> | Big chunk of math looks a lot like the trick where you exploit the fact that IF-tests turn into a number, and you can do math with it |
| 02:47 | <&McMartin> | But they forget to put the test in there so it was just a big complicated way of saying LET B=0 |
| 02:47 | <&McMartin> | What was clearly wanted there was LET B = (NOT THING)-(THING) for the trick to work. |
| 02:48 | <&McMartin> | But yeah, assigning a value to only then reassign it immediately without using it is bad form |
| 02:48 | <&McMartin> | Much like GOTO (the next line) |
| 03:07 | <&McMartin> | Anyway, the best-regarded US magazines of this time were the ones everyone remembers and so ended up being largely definitive... |
| 03:07 | <&McMartin> | ... and they had very aggressive technical editors who were also extremely knowledgeable, and it shows. |
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| --- Log closed Thu Dec 10 00:00:09 2020 |