victorfei

Notes for setting up and running Neo4j

Community edition only supports 1 db.

Community edition only supports 1 db, to create and switch db, needs to got to neo4j config file and manually set new db info and restart. https://community.neo4j.com/t5/neo4j-graph-platform/create-multiple-databases-in-community-version/m-p/33900

load csv

In neo4j.conf which located at root installation dir.

# This setting constrains all `LOAD CSV` import files to be under the `import` directory. Remove or comment it out to

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// Encryptes and writes string to ipfs. Retrieve and decrypts it.
var msg = 'begin r/w operation onto ipfs';
console.log(msg);
const crypto = require('crypto');
const ipfs = require('ipfs-core');
const { exit } = require('process');

const algo = 'aes-256-ctr';
let key = 'OrmiPrivateKey';
key = crypto.createHash('sha256').update(key).digest('base64').substr(0, 32);

victorfei

#!/usr/bin/python
# adapted from: 
#   http://wordaligned.org/articles/drawing-chessboards
from PIL import Image, ImageDraw
from itertools import cycle

def draw_chessboard(n=8, pixel_width=500):
    """
    Draw an n x n chessboard using PIL.
    """

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import os
from PIL import Image
import numpy as np

files = [f for f in os.listdir("handwriting/numbers/")]
files = ["handwriting/numbers/" + f for f in files]

STANDARD_SIZE = (50, 50)
def get_image_data(filename):
    img = Image.open(filename)

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# Standard scientific Python imports
import matplotlib.pyplot as plt

# Import datasets, classifiers and performance metrics
from sklearn import datasets, svm, metrics

# The digits dataset
digits = datasets.load_digits()

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#include <fstream>
#include <iostream>
using namespace std;

int main()
{
    ofstream msgFile;

    msgFile.open("msg", ios::out);

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

victorfei

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console