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Cristian Barrientos Montoya ColadaFF

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  • Colombia, Medellín
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@wellcaffeinated
wellcaffeinated / RXJS Observable from mongoose (mongodb) cursor.js
Created May 30, 2018 21:35
Rx.Observable that can sequentially pull data from a mongoose (mongodb) cursor with fine control over concurrency
const Rx = require( 'rxjs/Rx' );
// This took me way too long to figure out. Hope this helps someone.
// <3 Well Caffeinated
function fromCursor( cursor ){
return new Rx.Observable((obs) => {
// is the connection closed
var closed = false
// get the next document
@imamdigmi
imamdigmi / video_save.py
Last active March 18, 2022 18:26
TensorFlow object detection with video and save the output using OpenCV
"""
This notebook will demontrate a pre-trained model to recognition plate number in an image.
Make sure to follow the [installation instructions](https://github.com/imamdigmi/plate-number-recognition#setup) before you start.
"""
import numpy as np
import os
import six.moves.urllib as urllib
import sys
import tarfile
import tensorflow as tf
@trueadm
trueadm / adopt-syntax.js
Last active November 27, 2021 03:32
Adding a the "adopt" keyword to the JSX syntax
// I'm suggesting we add a new "adopt X from <Y />" syntax to the JSX language
// it would de-sugar to render prop children, but look and read better than
// what we currently have. For example:
// 1.
// this sugar
function MyComponent(props) {
adopt foo from <Bar />;
return <div>{foo}</div>;
}
@shortjared
shortjared / list.txt
Last active July 19, 2024 21:20
List of AWS Service Principals
a4b.amazonaws.com
access-analyzer.amazonaws.com
account.amazonaws.com
acm-pca.amazonaws.com
acm.amazonaws.com
airflow-env.amazonaws.com
airflow.amazonaws.com
alexa-appkit.amazon.com
alexa-connectedhome.amazon.com
amazonmq.amazonaws.com
@djspiewak
djspiewak / quick-tips-optimizing-jvm.md
Last active July 23, 2024 15:46

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

@djspiewak
djspiewak / thread-pools.md
Last active July 22, 2024 10:24

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

  1. CPU-bound
  2. Blocking IO
  3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

anonymous
anonymous / index.html
Created November 23, 2016 23:09
JS Bin // source https://jsbin.com/fawohujebo
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<style id="jsbin-css">
.toolTip {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
position: absolute;
@rondy
rondy / Effective_Engineer.md
Last active July 22, 2024 14:01

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

What's an Effective Engineer?

@jdegoes
jdegoes / Applied-FP-with-Scala.md
Last active May 9, 2024 08:27

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x
@Widdershin
Widdershin / contributors.md
Last active May 2, 2016 21:28
Cycle.js contributors wanted!

I'm looking for some awesome people to join me in working on some of the Cycle.js projects I've released. Have a look at the list. If you're unsure about anything (such as wanting to help but being unsure if you're able/welcome) please contact me!

Collaborators wanted:

tricycle (difficulty: beginner-advanced)

Tricycle lets you try out Cycle.js in your browser. Try it out here.

Tricycle has lots of opportunities to help out and improvements would make a big difference to the community as for a lot of beginners Tricycle is their first introduction to writing Cycle code.