hotBacteria

3 года назадdiscuss

I don't have much hope regarding this issue.

Researchers work a lot on their own time, so the millions mentionned in the article don't directly impact the institutions employing them. They are alone in this fight.

The petition (https://www.change.org/p/simplify-manuscript-submissions-in-...) linked in the article barely received 100 signatures in a month.

hotBacteria

3 года назадdiscuss

What is demonstrated here is that if you understand well the different parts of some code, you can recombine them in more efficient ways.

This is something very good to have in mind, but it must be applied strategically. Avoiding "clean code" everywhere won't always provide huge performances win and will surely hurt maintainability.

hotBacteria

6 лет назадdiscuss

This twitter thread from the author provides insight about how it was made: https://twitter.com/LodsDorian/status/1349291334759288832

hotBacteria

7 лет назадdiscuss

I like the shapes problem because I actually encountered it and it made me think.

I'm not sure about the switch approach described in the post:

  function area(shape)
    switch shape.type
      case "square": return shape.side ** 2
      case "circle": return 2 * PI * shape.radius
      case "triangle": return ... 
      case "segment": return 0
      case "polygon": return ...
      ...
      case "oval": return ...

You can have a lot of cases, some of them requiring non trivial code... Eventually you write a function for each case and it's more work than adding a method for each shape because you still need to write the switch...

Classes seem work better than structures here.

But then you want to handle intersections

The switch approach doesn't seem realistic:

  function intersection(shapeA, shapeB)
    if(shapeA.type == "circle" AND shapeB.type == "circle")...
    if(shapeA.type == "circle" AND shapeB.type == "square")...
    if(shapeA.type == "square" AND shapeB.type == "circle")...
    ...//uh oh you have nShapes**2 cases to handle

But java classes or not better: where do you define Circle-Square intersection? In Circle? In Square?

Even with multiple dispatch the solution is not ideal. You now have some things related to Circle (area, perimeter...) in the Circle.blub file, and intersection(Circle, Circle) wich only works with Circles is now in intersections.blub...

I don't see a good solution and sometimes I feel like the problem is more with our tools (code in text files) rather than programming paradigms

hotBacteria

7 лет назадdiscuss

Two points not mentionned:

1- The question of access: A theorical exhaustive map of the brain would be easier to access than an actual brain.

2- Tools: A map is not a piece of paper anymore. A 1:1 map of Earth doesn't seem absurd, as long as we can navigate it with levels of details

hotBacteria

7 лет назадdiscuss

You can write it without resorting to one-line conditionals:

  if(cond1){
   myVar = 1;
  }
  else if(cond2 && cond3){
   myVar = 10;
  }
  else if(cond2 && !cond3){
   myVar = 100;
  }
  else {
   myVar = 4;
  }

But when I encounter this kind of situations I have other problems than code formatting anyway:

with 3 conditions you have 2^3 possibilities to check: are you really really sure (!cond1 && !cond2 && cond3) should give you defaultValue ? Do you really want 1 even if !cond2 ? etc...

When possible these conditions should be avoided in the first place (depending on context of course)

hotBacteria

Submissions

Airshifumi: Play rock paper scissor using your webcam, with WebGL and TensorFlow

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