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Kenneth P. Barquero kenpb

  • Cartago, Costa Rica
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@fritzy
fritzy / 1_triggers.sql
Last active August 2, 2025 18:25
Get table change notifications from Postgres as JSON
CREATE OR REPLACE FUNCTION table_update_notify() RETURNS trigger AS $$
DECLARE
id bigint;
BEGIN
IF TG_OP = 'INSERT' OR TG_OP = 'UPDATE' THEN
id = NEW.id;
ELSE
id = OLD.id;
END IF;
PERFORM pg_notify('table_update', json_build_object('table', TG_TABLE_NAME, 'id', id, 'type', TG_OP)::text);
@rain1024
rain1024 / tut.md
Last active June 22, 2026 09:11
Install pdflatex ubuntu

PdfLatex is a tool that converts Latex sources into PDF. This is specifically very important for researchers, as they use it to publish their findings. It could be installed very easily using Linux terminal, though this seems an annoying task on Windows. Installation commands are given below.

  • Install the TexLive base
sudo apt-get install texlive-latex-base
  • Also install the recommended and extra fonts to avoid running into the error [1], when trying to use pdflatex on latex files with more fonts.
@2bard
2bard / mitmproxy cheat sheet
Created February 13, 2015 19:44
mitmproxy cheat sheet
Movement:
j, k down, up
h, l left, right (in some contexts)
space page down
pg up/down page up/down
arrows up, down, left, right
@davinkevin
davinkevin / MultipartFileSender
Created February 10, 2015 16:31
Implementing HTTP byte-range requests in Spring 4 and other framework...
package lan.dk.podcastserver.utils.multipart;
import lan.dk.podcastserver.utils.MimeTypeUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

Folder Structure

Please note

While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.

Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.

@pnc
pnc / observer.md
Last active April 1, 2025 21:38
Using Erlang observer/appmon remotely

Using OTP's observer (appmon replacement) remotely

$ ssh remote-host "epmd -names"
epmd: up and running on port 4369 with data:
name some_node at port 58769

Note the running on port for epmd itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:

$ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host
@ProjectCleverWeb
ProjectCleverWeb / centered.md
Last active June 2, 2025 19:04
Example of how to do centered text and images in Githb Flavored Markdown

LESS Coding Guidelines

Medium uses a strict subset of LESS for style generation. This subset includes variables and mixins, but nothing else (no nesting, etc.).

Medium's naming conventions are adapted from the work being done in the SUIT CSS framework. Which is to say, it relies on structured class names and meaningful hyphens (i.e., not using hyphens merely to separate words). This is to help work around the current limits of applying CSS to the DOM (i.e., the lack of style encapsulation) and to better communicate the relationships between classes.

Table of contents

@JesseBuesking
JesseBuesking / logging.yaml
Created April 14, 2014 18:54
Testing MultiProcessingLog on both Windows 7 Enterprise and Ubuntu Developers Version 10.04_20121120.
---
version: 1
disable_existing_loggers: False
formatters:
simple:
format: "%(name)-20s%(levelname)-8s%(message)s"
handlers:
console:
class: logging.StreamHandler
level: DEBUG
@wikimatze
wikimatze / gist:9790374
Created March 26, 2014 18:43
Github Two-Factor Authentication Failed For HTTPS

I heard from GitHub Two-Factor Authentication](https://github.com/blog/1614-two-factor-authentication) nearly a couple of days ago when I was reading my RSS feed. I enabled it and couldn' push to any of my repositories anymore. Learn in this blog post how to fix it.

Two-Factor Authentication

"Is a process involving two stages to verify the identity of an entity trying to access services in a computer or in a network". Github solves this authentication with sending an SMS to a device which wants to push to their platform.

Enabling Two-Factor Authentication