ltfschoen

use std::str;

fn main() {
  // -- FROM: vec of chars --
  let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
  // to String
  let string1: String = src1.iter().collect::<String>();
  // to str
  let str1: &str = &src1.iter().collect::<String>();
  // to vec of byte

ltfschoen

# Author: Luke Schoen 2017
import pandas as pd
import numpy as np
import functools

# Create DataFrame
# df = pd.DataFrame(np.random.randn(10,2))

# Populate with NaN values
df = pd.DataFrame({'col1': ['1.111', '2.111', '3.111', '4.111'], 'col2': ['4.111', '5.111', np.NaN, '7.111'], 'col3': ['8', '9', np.NaN, np.NaN], 'col4': ['12', '13', '14', '15']})

ltfschoen

Accounts

Different accounts are used to manage funds. The underlying cryptography of their account keys is the same:

Stash

• Primary account
• Holds funds. Usually a cold wallet (on piece of paper in a safe, or protected by layers of hardware security)
• Bonds (locks) a portion of its funds with a Controller for participation (since the stake key is kept offline)
• Unbonding requires waiting ~600 blocks before unlocked funds accessible again

ltfschoen

  // Custom Helper function for ExtendScript (Adobe CEP) created as an alternative since JavaScript Object(keys) method does not work
  
  var getKeysWithoutObjectKeysSupport = function(associativeArrayObject) {
    var arrayWithKeys=[], associativeArrayObject;
    for (key in associativeArrayObject) {
      // Avoid returning these keys from the Associative Array that are stored in it for some reason
      if (key !== undefined && key !== "toJSONString" && key !== "parseJSON" ) {
        arrayWithKeys.push(key);
      }
    }

ltfschoen

#!/bin/sh

# Start Ubuntu in container and install dependencies
docker run --name ubuntutest -t -i ubuntu /bin/bash
apt-get update
apt-get install -y curl
curl https://getsubstrate.io -sSf | bash -s -- --fast

# Install Substrate and Subkey
cargo install --force subkey --git https://github.com/paritytech/substrate --version 2.0.0 --locked

ltfschoen

# Convert Query String Parameters into Map (Key/Value Pairs)
# Output is: `%{"from" => "ME", "proof" => "PROVEN", "to" => "YOU", "to_index" => "THERE"}`

String.split("from=ME&to=YOU&to_index=THERE&proof=PROVEN", ~r/&|=/) |> Enum.chunk(2) |> Map.new(fn [k, v] -> {k, v} end)

ltfschoen

The following are steps taken to verify the checksum of the Rotki installer on macOS:

• Downloaded the file (i.e. rotki-darwin-v1.6.2.dmg.sha512) that contains the published SHA512 hash of binaries that we'll use as checksum to verify the integrity of the binary
• View the checksum in the file with cat rotki-darwin-v1.6.2.dmg.sha512
  • Example output was:

f1be8965f206fb0ae5f745575c0e4da12a302e237188bb5cd41d73a19705965fc409da72508253f8908626ccbfb43990bf0e801f3cfa0ff9e29000c7d177a074  rotki-darwin-v1.6.2.dmg

• Download the .dmg binary file from the Github releases page https://github.com/rotki/rotki/releases/tag/v1.6.2

ltfschoen

https://flutter.dev/docs/get-started/install/macos

• Download Flutter for macOS

• Extract

cd ~/development
unzip ~/Downloads/flutter_macos_v1.12.13+hotfix.9-stable.zip
mkdir -p $HOME/development
mv ./flutter $HOME/development/

ltfschoen

# shasum checksum 256 for https://www.osboxes.org/debian/

shasum -a 256 10G-64bit.7z
brew install p7zip
# extract
7za x 10G-64bit.7z

# gpg verify
cat checksums.txt
shasum -a 256 mac_1.7.8_MyCrypto.dmg

ltfschoen

• References:
  • https://github.com/AcalaNetwork/Acala/wiki

Setup Acala Node

• Fork https://github.com/AcalaNetwork/Acala
• Clone your fork using SSH. Fetch latest version in branch 'master'. Install submodules into /orml folder. Build and run docker container.

git clone git@github.com:ltfschoen/Acala.git
git remote add upstream https://github.com/AcalaNetwork/Acala