Skip to content

Instantly share code, notes, and snippets.

View erichocean's full-sized avatar

Erich Ocean erichocean

  • Xy Group Ltd
  • North Carolina
View GitHub Profile
@AtulKsol
AtulKsol / db_backup_commands.md
Last active December 28, 2024 02:23
Commands to backup & restore database
  1. pg_dump is a nifty utility designed to output a series of SQL statements that describes the schema and data of your database. You can control what goes into your backup by using additional flags.
    Backup: pg_dump -h localhost -p 5432 -U postgres -d mydb > backup.sql

    Restore: psql -h localhost -p 5432 -U postgres -d mydb < backup.sql

    -h is for host.
    -p is for port.
    -U is for username.
    -d is for database.

@tunabrain
tunabrain / Range.hpp
Last active August 1, 2019 08:30
Python ranges in C++
#ifndef RANGE_HPP_
#define RANGE_HPP_
template<typename T> class RangeIterator;
template<typename T>
class Range
{
T _start, _end, _step;
@jwilson8767
jwilson8767 / es6-element-ready.js
Last active February 24, 2025 08:50
Wait for an element to exist. ES6, Promise, MutationObserver
// MIT Licensed
// Author: jwilson8767
/**
* Waits for an element satisfying selector to exist, then resolves promise with the element.
* Useful for resolving race conditions.
*
* @param selector
* @returns {Promise}
*/
------------------------- MODULE GryadkaCasRegister -------------------------
EXTENDS Integers, Sequences, FiniteSets
-----------------------------------------------------------------------------
\* Timestamps is the set of possible timestamps for operations to choose from.
\* Each operation uses a unique timestamp.
\* Values is the set of possible values to set the register to.
\* Acceptors is the set of nodes which act as acceptors in the paxos sense.
\* Quorums is the set of all possible quorums, typically simple majorities.
CONSTANTS Timestamps, Values, Acceptors, Quorums
@bkaradzic
bkaradzic / notes_on_header_files.md
Last active October 18, 2025 01:36
Notes on header files

Notes on header files

This article is also available here

After over 20 years working with C/C++ I finally got clear idea how header files need to be organized. Most of the projects in C++ world simply dump everything in .h file, and most of my C++ code was organized this way. Lately I started to separate function declaration from implementation as it was done in C. Now .h headers are exclusevely intended for function and class declaration with doxygen documentation style comments. Inline implementation of functions, class method implementation, etc. goes into .inl headers or .cpp files.

For example .h file would contain only declaration and doxygen style documentation comment:

@benschwarz
benschwarz / pg.md
Last active October 16, 2024 23:15
Awesome postgres
@colophonemes
colophonemes / create_triggers
Last active February 1, 2025 14:53
Postgres TRIGGER to call NOTIFY with a JSON payload
CREATE TRIGGER person_notify AFTER INSERT OR UPDATE OR DELETE ON income
FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
'id',
'email',
'username'
);
CREATE TRIGGER income_notify AFTER INSERT OR UPDATE OR DELETE ON income
FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
'id',
The Mosh and Quake 3 Networking Models and State Synchronization Algebra
========================================================================
Mosh is a new remote shell program and protocol: https://mosh.org/
You may read technical details about its internals here:
https://www.usenix.org/system/files/login/articles/winstein.pdf
https://mosh.org/mosh-paper.pdf
@ReneHollander
ReneHollander / main.cpp
Created December 29, 2016 16:08
Skia on the Raspberry Pi
#include <iostream>
#include <assert.h>
#include <stdio.h>
#include <cstdio>
#include <bcm_host.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
@larryhou
larryhou / tinyproxy.md
Last active November 27, 2024 19:06
Install tinyproxy on macOS
  • brew install tinyproxy

  • Comment out Allow 127.0.0.1 in /usr/local/etc/tinyproxy.conf.

  • Start tinyproxy with tinyproxy -d.

  • Follow the log file with

    tail -f /usr/local/var/log/tinyproxy/tinyproxy.log
  • On the iOS device, in Wi-Fi settings, set HTTP Proxy to Manual and set