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@joepie91
joepie91 / no-your-cryptocurrency-cannot-work.md
Last active July 5, 2024 10:43
No, your cryptocurrency cannot work

No, your cryptocurrency cannot work

Whenever the topic of Bitcoin's energy usage comes up, there's always a flood of hastily-constructed comments by people claiming that their favourite cryptocurrency isn't like Bitcoin, that their favourite cryptocurrency is energy-efficient and scalable and whatnot.

They're wrong, and are quite possibly trying to scam you. Let's look at why.

What is a cryptocurrency anyway?

There are plenty of intricate and complex articles trying to convince you that cryptocurrencies are the future. They usually heavily use jargon and vague terms, make vague promises, and generally give you a sense that there must be something there, but you always come away from them more confused than you were before.

@alexishida
alexishida / rtsp-intelbras-outros.txt
Last active July 2, 2024 18:24
RTSP dvr intelbras e outros
-------- Intelbras -------------------------------------------------------
rtsp://usuário:senha@ip:porta/cam/realmonitor?channel=1&subtype=0
-------- Luxvision -------------------------------------------------------
rtsp://ip:porta/user=[usuário]&password=[senha]&channel=1&stream=0.sdp
-------- Hikvision -------------------------------------------------------
rtsp://usuário:senha@ip:porta/Streaming/Channels/102
@masthoon
masthoon / SystemCMD.cpp
Last active July 13, 2024 20:39
Launch SYSTEM CMD in user current session (from a service)
#include "stdafx.h"
#include <windows.h>
#include <Winbase.h>
#include <Wtsapi32.h>
#include <Userenv.h>
#include <malloc.h>
#pragma comment(lib, "Wtsapi32.lib")
#pragma comment(lib, "Userenv.lib")
@yossorion
yossorion / what-i-wish-id-known-about-equity-before-joining-a-unicorn.md
Last active June 25, 2024 07:29
What I Wish I'd Known About Equity Before Joining A Unicorn

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

anonymous
anonymous / amazon.md
Created August 19, 2015 18:34

I would like to tell my story of burnout at Amazon, considering the fact that there is so many stories out there on both sides of the issue. My story is also on both sides of the issue, and I've had a lot of time to think about why people can see the same culture but come away with completely different conclusions. This is a throwaway because I still work there and I don't plan on changing that, and I don't exactly trust the company to take this in good faith, despite the fact that I mean this as a purely constructive criticism for a company that I really do like.

I am an autodidact (my formal education only tangentially describes what I can do), and a polymath (capable of holding my own amongst PhD-level Operations Researchers, Statisticians, Econometricians, Data Scientists, Computer Scientists, as well as Software Engineers). I love to solve real world problems, and in many ways am the perfect type of person for Amazon's culture. I started in a level 5 position, but felt from the beginning that I warrant

@longlostnick
longlostnick / uploads_controller.rb
Created June 17, 2014 18:20
Rails JSON file upload with carrierwave (from base64 string)
class Api::UploadsController < ApiController
def create
@upload = Upload.new(upload_params)
ensure
clean_tempfile
end
private
@FiXato
FiXato / Scripts.rvdata2-exporter.rb
Last active February 16, 2024 13:47 — forked from hirataya/rvdata2_dump.rb
Script to export the scripts inside the Scripts.rvdata2 data file to Data/exported_scripts as plain text Ruby files. If you run this script from inside RPG Maker VX Ace, I would suggest creating the Data/exported_scripts folder yourself as RGSS3 doesn't seem to support requiring FileUtils. Based on HIRATA Yasuyuki / 平田 泰行's rvdata2_dump.rb script:
#! /usr/bin/env ruby
# encoding: utf-8
#
# Script to export the scripts inside the Scripts.rvdata2 data file to Data/exported_scripts as plain text Ruby files.
# If you run this script from inside RPG Maker VX Ace, I would suggest creating the Data/exported_scripts folder yourself
# as RGSS3 doesn't seem to support requiring FileUtils.
# Based on HIRATA Yasuyuki / 平田 泰行's rvdata2_dump.rb script: https://gist.github.com/hirataya/1853033
begin
require 'fileutils'
rescue LoadError
@lpereira
lpereira / partial.c
Last active January 29, 2023 20:12
Partial functions in C This program illustrates a hack to create partial functions in C. The way it works is that it generates a template function (partial_template_function) with known pointers, that is later copied to a region of memory obtained with mmap(), patched up with the address and data to be passed to the real function, and then made …
/*
* Partial applied functions in C
* Leandro Pereira <leandro@tia.mat.br>
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
@ndarville
ndarville / business-models.md
Last active January 13, 2024 17:27
Business models based on the compiled list at http://news.ycombinator.com/item?id=4924647. I find the link very hard to browse, so I made a simple version in Markdown instead.

Business Models

Advertising

Models Examples
Display ads Yahoo!
Search ads Google
@klange
klange / _.md
Last active May 23, 2024 13:45
It's a résumé, as a readable and compilable C source file. Since Hacker News got here, this has been updated to be most of my actual résumé. This isn't a serious document, just a concept to annoy people who talk about recruiting and the formats they accept résumés in. It's also relatively representative of my coding style.

Since this is on Hacker News and reddit...

  • No, I don't distribute my résumé like this. A friend of mine made a joke about me being the kind of person who would do this, so I did (the link on that page was added later). My actual résumé is a good bit crazier.
  • I apologize for the use of _t in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".
  • Since people kept complaining, I've fixed the assignments of string literals to non-const char *s.
  • My use of type * name, however, is entirely intentional.
  • If you're using an older compiler, you might have trouble with the anonymous unions and the designated initializers - I think gcc 4.4 requires some extra braces to get them working together. Anything reasonably recent should work fine. Clang and gcc (newer than 4.4, at le