alebaffa

Git Squash alternatives:

• git rebase -i HEAD~X - this allows you to merge interactively several commits
  • then fixup OR pick OR reword AND push --force
• git reset --hard HEAD~X - this rollbacks the index back to X commits (check git status before doing this. Commit first)
  • commit again using just one commit
• git reset --hard COMMIT_ID - this rollbacks the index back to the commit_id

alebaffa

w3 = web3.Web3(HTTPProvider("PUT HERE YOUR PROVIDER"))
UNISWAP_V3_POSITIONS_NFT = "0xC36442b4a4522E871399CD717aBDD847Ab11FE88"
# example of Ethereum transaction calling multicall on Uniswap v3 (Etherscan)
tx = w3.eth.get_transaction(HexBytes("0xb835f4ab29be621eca1b2520a1e85d06b2e4fc03b84772e3fe05c220509e88b7"))
abi = await get_abi(Chain.ETHEREUM, UNISWAP_V3_POSITIONS_NFT)
contract = w3.eth.contract(HexBytes(UNISWAP_V3_POSITIONS_NFT), abi=abi)
fn, params = contract.decode_function_input(tx.input)
fn_and_params: dict[str, list[dict[str, str]]] = {}
for key, value in params.items():
    for v in value:

alebaffa

# in order to download release artifacts from github, you have to first retreive the
# list of asset URLs using the github repo REST API. Use the asset URL to download 
# the artifact as a octet-stream data stream. You will need to get an access token 
# from "settings -> developer settings -> personal access tokens" on the github UI
#!/bin/bash -e

owner="MY_ORG_NAME"
repo="MY_REPO_NAME"
tag="ARTIFACT_TAG"
artifact="ARTIFACT_NAME"

alebaffa

Thanks everyone for commenting/contributing! I made this in college for a class and I no longer really use the technology. I encourage you all to help each other, but I probably won't be answering questions anymore.

This article is also on my blog: https://emilykauffman.com/blog/install-anaconda-on-wsl

Note: $ denotes the start of a command. Don't actually type this.

Steps to Install Anaconda on Windows Ubuntu Terminal

1. Install WSL (Ubuntu for Windows - can be found in Windows Store). I recommend the latest version (I'm using 18.04) because there are some bugs they worked out during 14/16 (microsoft/WSL#785)
2. Go to https://repo.continuum.io/archive to find the list of Anaconda releases
3. Select the release you want. I have a 64-bit computer, so I chose the latest release ending in x86_64.sh. If I had a 32-bit computer, I'd select the x86.sh version. If you accidentally try to install the wrong one, you'll get a warning in the terminal. I chose `Anaconda3-5.2.0-Li

alebaffa

// To force print in console
sp_std::if_std! {
    // This code is only being compiled and executed when the `std` feature is enabled.
    println!("Hello native world");
}

// Run this command to see it in console during tests:  cargo test -- --nocapture

alebaffa

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

alebaffa

List of steps of a basic chaincode lifecycle on Hyperledger Fabric

Pre-requisites

• Install Docker Compose: sudo apt install -y docker-compose (Make sure that the docker-compose version is 1.14.0)
• Install Golang version >= 1.15.x
• Install build essential sudo apt install -y build-essential

Download Fabric and Fabric-samples

• mkdir -p $HOME/go/src/github.com/hyperledger
• cd $HOME/go/src/github.com/hyperledger
• curl -sSL http://bit.ly/2ysbOFE | bash -s -- 2.2.2 1.4.9 (do not change these versions)

alebaffa

Bank in a Box Workshop for Capital Markets : Speaker Notes

Installing and Configuring a local Kubernetes cluster

brew install docker kubectl helm 

You can do this with docker for mac by enabling kubernetes
Make sure to set docker for mac's resources for this demo. Ideally 8GB CPU, and 12GB of Memory.

alebaffa

class TextAnalyzer
  def initialize
    @file = File.open("song.mp3")
  end

  def has_tag?
    @file.seek(-128, IO::SEEK_END)
    @file.read(3) == 'TAG'
  end

alebaffa

// 1. Use the PersistentState custom schema to filter by custom attribute
val customFilter = builder {
    StateSchemaV1.PersistentState::productId.equal(productId)
}
// 2. Create a CustomQueryCriteria using the above filter
val customCriteria = QueryCriteria.VaultCustomQueryCriteria(customFilter)


// 3. Easy and quick filter. This returns a list
val state = serviceHub.vaultService.queryBy<YourState>().states.filter {