laboon

[ (a,b,c) | c <- [1..], b <- [1..c], a <- [1..b], a^2 + b^2 == c^2, a + b + c == 1000]

laboon

jQuery ($) ->
  $(".span_lesson_dropdown").click ->
    if $(".row_select_lesson").hasClass "lesson_visible"
      console.log "is vis"
      $(".row_select_lesson").slideUp()
      $(".span_lesson_dropdown").text = "\/"
    else
      console.log "not vis"
      $(".row_select_lesson").slideDown()
      $(".span_lesson_dropdown").text = "/\"

laboon

Eustress over distress

Learning is by definition a "stressful" experience, in that obtaining new knowledge stresses the brain. However, there's a difference between eustress ("good stress", e.g. doing a Sudoku puzzle) and distress ("bad stress", e.g., being yelled at by your boss). Constant bad stress especially decreases your ability to learn, but is actually beneficial in small doses. See this Nature article for a good overview: https://www.nature.com/articles/npjscilearn201611 There have also been studies that taking mini-breaks from stress when learning help improve retention: https://www.ninds.nih.gov/News-Events/News-and-Press-Releases/Press-Releases/Want-learn-new-skill-Take-some-short-breaks

I try not to make my lectures or explanations too dense, and make random digressions to provide a "mental break". For instance, in my software engineering classes, when I discuss how sometimes the best code is no code, I'll do a quick talk about Arthur Schopenhauer's philosophy of antinatalism ("th

laboon

Run the default initial blockchain

./target/debug/node-template
--base-path /tmp/alice
--chain=local
--key //Alice
--port 30333
--telemetry-url ws://telemetry.polkadot.io:1024
--validator
--name AlicesNode

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Setup Instructions

git clone https://github.com/paritytech/substrate
cd substrate/node-template
git checkout 53df5619c0273ef226ed9a470ca863d212ac917c
./scripts/init.sh
./scripts/build.sh
cargo build
cd ..

laboon

(1116) ~/web3/api/examples_runnable/20190601 $ ./06_make_transfer.sh 
/Users/laboon/web3/api/examples_runnable/20190601
load 
 connect to endpoint [ws://127.0.0.1:9944]

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

laboon

# Validator Workshop Commands and Links

This will contain all of the instructions for the Polkadot Validator workshop.

Slides: https://docs.google.com/presentation/d/1HCBgya-KWCjCEHYtxSFJ3lSz9U22Bs-8vMuA4C2VRzw/

## Terms

What is a Validator? https://wiki.polkadot.network/en/latest/polkadot/node/node-operator/

laboon

Validator Workshop Commands and Links

This will contain all of the instructions for the Polkadot Validator workshop.

Slides: https://docs.google.com/presentation/d/1HCBgya-KWCjCEHYtxSFJ3lSz9U22Bs-8vMuA4C2VRzw/

Terms

What is a Validator? https://wiki.polkadot.network/en/latest/polkadot/node/node-operator/

laboon

c = 0;
x = document.getElementsByClassName("mx_MemberDeviceInfo_verify");
f = () => {
  if (c < x.length) {
    x[c++].click();
    timer = setTimeout(() => {
      document.getElementsByClassName("mx_linkButton")[0].click();
      timer2 = setTimeout(() => {
        document.getElementsByClassName("mx_Dialog_primary")[0].click();
        timer = setTimeout(f, 0);

laboon

# Polkadot Governance Workshop

## Connecting the Polkadot UI

https://polkadot.js.org/apps/#/

Go to Settings -> Custom Endpoint

In "remote node/endpoint to connect to", type `ws://127.0.0.1:9944/` (note: will change!)