Comments by "xybersurfer" (@xybersurfer) on "Computerphile" channel.

  1.  @ThorstenAltenkirch  hmm. isn't it still possible to apply holds to itself with "def holds(fun)"? similarly to the blank tape problem, where the program has internalized it's input and the first thing it does is write this input to the tape
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  2. why not put the Mars Rover programs on one line?
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  3. agreed but it's hard to pull off
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  4. Anshul Mittal a pointer is a memory address of data. in the previous video, the data was the "Thing" "object". this is called a pointer to a "Thing". in this video he also used a pointer to a pointer to a "Thing"
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  5. this is my first time hearing about "Duff's device". thanks for pointing that this interesting trick
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  6. it's a good thing that they thought of creating UDP, but it's probably not a coincidence
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  7. it took me a while to understand that she was saying "3D printer"
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  8. interesting. i wonder
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  9. why don't they simply send each other a public key?
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  10. Regular expressions are what?
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  11. interesting. i also didn't know that s-box, meant substitution box
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  12.  @thettguy  1 byte it's not that much relative to the rest of a record. i suspect that there was a lot of premature optimization back then, because of the way you think
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  13. one of the cool things about functional programming is that it's easier to capture in a flowchart than imperative programming
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  14. that's a pretty cool strategy. i've been interested in doing the same with my applications. i think there is a lot of deep stuff to be learned that way, depending on how far you go
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  15. "the numbers json"?
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  16.  @RocketLR  oh, i see. then it makes sense that i don't recognize it
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  17. how hard could it be? or is that a naive question?
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  18.  @madhatter-  oh i see. although it was secondary school, we had a subject (so a teacher) dedicated to it and computers. i think that's the right way to go about it, instead of trying to fit it all into an existing subject. basically to take it very seriously
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  19. it was a nice talk, from which i learned something. but it could use some more emphasis on practical details of: - how the concepts tie together - maybe just a tiny bit more about how public and private keys are normally used - could also mention that the sender chooses the transaction fee
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  20.  @AndersJackson  regex is rarely that useful with just the basics
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  21. another problem with regex is that they can look like they should work, when you missed some edge cases
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  22.  @InShadowsLinger  you assume that it is worth learning. you can't just assume your desired conclusion (begging the question). if we can't even agree on what is considered elegant, then what is the point in providing a solution? let's see your solution first. my main issue with Regex is that the operators come with too much baggage and that it looks unstructured, compared to an expression most languages it is used in
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  23. ​ @InShadowsLinger  useful and worth learning are not the same thing. there is a higher standard for the second. not only have we underspecified the problem you tried solving. more importantly how does your solution address the baggage and the unstructured look of regex that i called out?
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  24. ​ @InShadowsLinger  no. you're reply was irrelevant. i did not actually want you to post a solution. i told you to go first to make you realize that it doesn't make sense to do so. i pretty much spelled it out "then what is the point in providing a solution?". but you still failed realize that. it seems you just couldn't help yourself. now you are basically the only person between us 2 that knows the specifics of the problem you solved. i don't have the specs of the problem, and i don't intend to interpret the specs from your regex. you are free to give the specs. but right now your solution is meaningless to me
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  25. tabs for indentation and spaces for aligning is best. but it's hard to check if if you did it right (especially if the editor also formats automatically), so i uses spaces for both. my tab key inserts multiple spaces
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  26. the problem with cryptography, is actually probably the existence of quantum computers. but to me, a technique making use of it is probably the best option right now
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  27. the syntax is the structure of the language and what it looks like: - in English for example every sentence must end with a "." and you can only use words in the dictionary and made up names - in C for example every statement must end with a ";" and you can only use variable names that you declared i recommend the Comupterphile video "Parsing Explained - Computerphile" about syntax the semantics is what the syntax means or does: - in English for example you can lookup the meaning of words in a dictionary. words have a different meaning depending on the language - in C for example you could look up the meaning of a statement in a book like "The C Programming Language" i recommend Udacity video "Syntax Vs Semantics - Programming Language" about semantics i don't remember any video from Computerphile about both, but it would be cool to see such a video.
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  28.  @xurtis  i am aware that it falls short. i was never really a fan of the book to be honest. i'm not really expecting OP to go read that book. it was merely meant as an example, to give a rough idea. sorry for making it look like i was endorsing that book
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  29.  @xurtis  don't misunderstand. i'm not even a fan of C. i think it has a lot of problems. i just picked C as an example because i thought it is a reasonably popular language. to be honest i'm not really satisfied with the expressiveness of any of the languages i've tried. what do you mean with "I think the thing is like to see is something"?
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  30. Joshua Hillerup i think they are exactly the same. it's more convenient to insert something into the front of a singly-linked list than into the back, because inserting into the back would require going through the whole list. so people tend to keep these lists reversed as long as possible so they can insert things into the front efficiently. that's why you see a lot of reversed lists. usually people reverse the list when they are done, to give it the correct order again. the exact same problem exists with the singly-linked lists in this video
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  31. yeah. i don't think the problem is even the inability to debug. it's the lack of clarity. things can look correct but still be wrong
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