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Kyriakos Chatzidimitriou kyrcha

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@kyrcha
kyrcha / crawler.js
Last active February 27, 2024 03:03
npm registry crawler
var request = require('request'),
cheerio = require('cheerio'),
async = require('async');
var base = 'https://www.npmjs.org',
concurrency = 2;
var q = async.queue(function(task, next) {
setTimeout(function() {
console.log('GET ' + task.url);
@kyrcha
kyrcha / sigmoid.R
Last active November 26, 2019 08:13
Fitting a sigmoind curve in R
# function needed for visualization purposes
sigmoid = function(params, x) {
params[1] / (1 + exp(-params[2] * (x - params[3])))
}
x = 1:53
y = c(0,0,0,0,0,0,0,0,0,0,0,0,0,0.1,0.18,0.18,0.18,0.33,0.33,0.33,0.33,0.41,
0.41,0.41,0.41,0.41,0.41,0.5,0.5,0.5,0.5,0.68,0.58,0.58,0.68,0.83,0.83,0.83,
0.74,0.74,0.74,0.83,0.83,0.9,0.9,0.9,1,1,1,1,1,1,1)
@kyrcha
kyrcha / README.md
Last active January 11, 2017 15:21
Deploying a node app with flightplan

Complete guide on how to deploy a node app in an Ubuntu server using flightplan can be found here:

@kyrcha
kyrcha / README.md
Created December 17, 2017 18:50
Deep Learning with Python and Anaconda

Instructions of how to set-up environments etc.

@kyrcha
kyrcha / anaconda.md
Last active January 3, 2019 12:56
Anaconda commands

Checkout all the packages in the default conda environment:

conda list

Upgrading conda and packages:

conda upgrade conda
conda upgrade --all

Installing packages examples:

@kyrcha
kyrcha / README.md
Last active August 21, 2018 16:40
Spin mongodb with mongo express using docker compose

Accessible from the web: http://hostname:8081 through mongo-express and you can connect with a mongodb client like robo 3T in hostname:27017.

To run:

docker-compose -f mongo.yml up

@kyrcha
kyrcha / .cyclopt.json
Last active March 19, 2019 12:08
Configure your .cyclopt.json to ignore files and folders. This is what we use as our basis. Supports minimatch patterns https://github.com/isaacs/minimatch#usage
{
"ignore": [
"**/deps/**",
"**/node_modules/**",
"**/thirdparty/**",
"**/third_party/**",
"**/bower_components/**",
"**/vendor/**",
"**/vendors/**",
"**/**-min-**",
@kyrcha
kyrcha / running-average-redis-python.py
Last active July 7, 2020 06:42
Calculate the running average and standard deviation using redis transactions (pipelines in python-redis) and multiple python threads. You can quickly test it by installing a dockerized redis.
from multiprocessing import Pool
import redis
import math
import json
from random import seed
from random import gauss
# Atomic operations
def sum(x):
r = redis.Redis(host='localhost', port=6379, db=0)
@kyrcha
kyrcha / .editorconfig
Created April 12, 2019 07:13
My editor config file for Visual Studio Code. Put it in the root of your project. Go to the preferences of VSC > Keyboard Shortcuts. Search for document format shorcut. Open a file. Use that shorcut and your document should be formatted.
# editorconfig.org
root = true
[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
@kyrcha
kyrcha / zipballs-downloader.js
Last active June 11, 2019 10:29
Downloading tarballs (or zipballs) using JavaScript async/await, the `Get archive link` of the GitHub Contents API, the octokit/rest.js client and the request library
const Octokit = require('@octokit/rest')
const rp = require('request-promise')
const fs = require('fs')
function sleep (ms) {
return new Promise(resolve => setTimeout(resolve, ms))
}
const baseUrl = 'https://api.github.com'
const octokit = new Octokit({ auth: process.env.GITHUB_TOKEN })