adi-g15

After a lot of searching over the network, this is what I have ended up with. This is intentionally made such that even a absolute beginner is able to follow, so uses fixed paths.

Note: I am not using the --additional-urls flag since it didn't work for me back then, you may try it.

Step 0

First ensure that your PC is detecting the NodeMCU atleast.

arduino-cli board list

adi-g15

Steps to reproduce problem

1. wget https://github.com/adi-g15/zeeve-learnings/raw/dev/the-os-cashier/sawtooth-os-cashier-default.yaml
2. docker-compose -f sawtooth-os-cashier-default.yaml up

Then in another terminal after docker compose completes,

1. docker exec -it sawtooth-shell-default bash
2. os-cashier-cli --url http://rest-api:8008 reg username
3. curl --request POST --header "Content-Type: application/octet-stream" --data-binary @os-cashier.tmp.batches "http://rest-api:8008/batches"

adi-g15

Weekly Breakdown

adi-g15

SOURCE - https://stackoverflow.com/a/66956129/12339402

#!/bin/bash
# pypi-search.sh 
# This script fetch data from https://pypi.org/simple/ 
# process the output for simple package name output with perl
# and then apply a regex pattern to the result

pypiurl=https://pypi.org/simple/

adi-g15

Signing executable/scripts on Windows

SOURCE - https://stackoverflow.com/a/51443366/12339402

Using New-SelfSignedCertificate:

1. Generate the key:

New-SelfSignedCertificate -DnsName your@email.com -Type CodeSigning -CertStoreLocation cert:\CurrentUser\My

adi-g15

Understanding CSRF

Source- https://github.com/pillarjs/understanding-csrf

Reason- To keep as a self note, but also public, there's no problem if someone else spends a minute or two to read this article/readme.

The Express team's csrf and csurf modules frequently have issues popping up concerned about our usage of cryptographic functions. These concerns are unwarranted due to a misunderstanding of how CSRF tokens work. So here's a quick run down!

adi-g15

Implementing a Matrix data structure using Graphs

Generally, we would use a std::vector<std::vector> data structure, to hold a matrix, say a 3x3 matrix. Though, here what we will be creating is a custom Matrix class, using nodes and `pointers`.

Possible Use Case ->

1. You need a matrix, that may expand and compress many times

   In this case, using vector<vector> will cause memory allocations that may require whole copy of the matrix to a new location, this can be big overhead when working with large matrices

2. Equal/Controlled expansion on particular/all sides of the matrix,

   This will likely be not what you need to do, generally, but here we are taking a look for interest. In this also, vector<vector> may need frequent copies of whole matrix to new array (almost always actually in this case)

adi-g15

HacktoberFest2020

A repo listing the repos under this account, where beginners can contribute

1. Ludo-The_Game - C++, HTML, ReactJS

   Follow the issues section for the issues, you will find many beginner issues there

2. AttendancePortal - HTML, CSS, JS

   This is a good start for a beginner, in web development, since here you can contribute HTML, and for python beginners knowing Flask

3. CSV_Tabler - C++

adi-g15

const { Schema, model, connect } = require("mongoose");

connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useCreateIndex: true }, (err) => {
    if (!err) {
        console.log('MongoDB Connection Succeeded.');
    } else {
        console.log('Error in DB connection: ' + err);
    }
});