Cheatsheet for the modern JavaScript

Post by Stratoscope » Sun, Oct 01, 2017, 1:33 PM UTC

nerdponx wrote: post #18

Stratoscope wrote: post #14

Earlier quoted context omitted.

Thanks for the cheatsheet examples. They bring back fond memories of the laminated cheatsheets I used to buy at the bookstore. But it's been a long time since I used one of those; now I just want everything in digital form to keep my backpack light. It was interesting that these are all bitmap image files at a rather low resolution. The text is so blurry on all of them! It made me wonder: do people actually use these…

Why are you being downvoted for this? AFAICT these are low-res previews of high-quality PDF cheat sheets you can buy.

Post by yorwba » Sun, Oct 01, 2017, 2:19 PM UTC

nerdponx wrote: post #20

mattmanser wrote: post #9

Ugh, why can't JavaScript programmers learn from others languages first? Making all your variables const is just going to confuse most people WHEN THEY'RE NOT CONSTANT. Stop with the const spam already, you just look like dicks. I am waiting for the articles in 3 years time, "const isn't constant" as the JavaScript community tediously explain to each other ref. vs value types like it's the 1990s. Just use let and sto…

I get your point, but I'm not sure I share your cynicism. For instance, a "constant" container with mutable contents is the first example given in Practical Common Lisp [0]: (defvar *db* nil) (defun add-record (cd) (push cd *db*)) (defun make-cd (title artist rating ripped) (list :title title :artist artist :rating rating :ripped ripped)) (add-record (make-cd "Roses" "Kathy Mattea" 7 t)) If you're concerned about thi…

  (defun load-db (filename)
    (with-open-file (in filename)
      (with-standard-io-syntax
        (setf *db* (read in)))))

Post by andai » Sun, Oct 01, 2017, 2:22 PM UTC

Stratoscope wrote: post #14

ComputerGuru wrote: post #12

Earlier quoted context omitted.

Thank you. For comparison, these are real cheatsheets: * https://zeroturnaround.com/wp-content/uploads/2017/03/regex-... * https://rumorscity.com/wp-content/uploads/2014/08/10-Best-VI... * https://wch.github.io/latexsheet/latexsheet-1.png

Thanks for the cheatsheet examples. They bring back fond memories of the laminated cheatsheets I used to buy at the bookstore. But it's been a long time since I used one of those; now I just want everything in digital form to keep my backpack light. It was interesting that these are all bitmap image files at a rather low resolution. The text is so blurry on all of them! It made me wonder: do people actually use these…

Post by vectorpush » Sun, Oct 01, 2017, 5:44 PM UTC

mattmanser wrote: post #9

Ugh, why can't JavaScript programmers learn from others languages first? Making all your variables const is just going to confuse most people WHEN THEY'RE NOT CONSTANT. Stop with the const spam already, you just look like dicks. I am waiting for the articles in 3 years time, "const isn't constant" as the JavaScript community tediously explain to each other ref. vs value types like it's the 1990s. Just use let and sto…

Post by Mateon1 » Sun, Oct 01, 2017, 6:09 PM UTC

jlebrech wrote: post #5

I usually just do just enough javascript, but didn't know the difference between let and var, not it makes sense. the explanation of reduce made sense too.

    function do_something() {
      if (true) {
        var x = 42;
        let y = 42;
      }
      console.log(x); // 42
      console.log(y); // Reference error: y is not defined
    }

    for (var i = 0; i  5, 5, 5, 5, 5
    }

    for (let i = 0; i  0, 1, 2, 3, 4
    }