Skip to content

Instantly share code, notes, and snippets.

@wstucco
wstucco / NumberParser.ex
Created Mar 19, 2020
NimbleParser excercise: parse numbers in "it_IT" locale format
View NumberParser.ex
defmodule NumberParser do
import NimbleParsec
@moduledoc """
In most European countries decimal separator is the , (comma)
This is a simple parser for numbers formatted that way
"""
nat = integer(min: 1)
sep = string(",")
View wait_for_processes.ex
defmodule App do
def bench do
:timer.tc(fn -> start() end)
end
defp start do
run()
wait()
end
View apply_after_vs_send_after.ex
defmodule A do
use GenServer
def start do
GenServer.start_link(__MODULE__, [])
end
def send_after(pid) do
1..10
|> Enum.each(fn _ -> Process.send_after(pid, :message, 1_000) end)
@wstucco
wstucco / one_million_processes.exs
Last active Sep 27, 2017
One million threads VS one million Erlang processes
View one_million_processes.exs
defmodule Processes do
@compile :native
def create_and_forget do
1..1_000_000
|> Enum.each(fn x ->
Task.async(fn -> x + 1 end) |> Task.await
end)
IO.puts("Maximum number of threads per process is = 1000000")
@wstucco
wstucco / find_similar_ip.ex
Last active Jul 21, 2017
most similar ip Elixir
View find_similar_ip.ex
{:ok, ips} = :inet.getif()
ips
|> Enum.map(fn {ip, _broadaddr, _mask} -> ip |> Tuple.to_list |> Enum.map_join(".", &to_string/1) end)
|> Enum.map(fn ip -> {ip, String.jaro_distance(ip, "192.168.99.100")} end)
|> Enum.sort(fn {_, score1}, {_, score2} -> score1 > score2 end)
|> List.first
|> elem(0)
@wstucco
wstucco / build.sh
Last active Oct 12, 2015
Writing Ruby Extensions in go
View build.sh
go build -buildmode=c-shared -o hello.so hello.go
# if no error is returned you can check that the shared library is exporting
# the right symbols by executing
# $ nm -gU ./hello.so | grep hello
# 0000000000002050 T __cgoexp_d4a435ec6890_hello_world
# 0000000000001ae0 T _hello_world <--- ALL SYSTEMS ARE GO
View keybase.md

Keybase proof

I hereby claim:

  • I am wstucco on github.
  • I am massimo (https://keybase.io/massimo) on keybase.
  • I have a public key whose fingerprint is 4538 9292 4496 E67A 6CE2 BF39 5D2C 6772 9E02 C529

To claim this, I am signing this object:

@wstucco
wstucco / main.rb
Last active May 28, 2019
Opal Meteor
View main.rb
if Meteor.client?
user = User.new('Admin')
puts user
puts user.admin?
puts "hello from client #{user.name}!"
end
if Meteor.server?
user = User.new('Massimo')
puts user
View vector_realloc.cpp
/*
* Copyright (C) 2012, Tino Didriksen Consult
* Developed by Tino Didriksen <tino@didriksen.cc>
* Modified by Massimo Ronca
*
* This file is part of Benchmarks
*
* Benchmarks is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
View app.json
{
"env": "2.0.7.0",
"startup_app": {
"name": "Hello Open Fin",
"url": "http:/localhost:5000/index.html",
--> "uuid": "OpenFinHelloWorld",
.
.
.
}
You can’t perform that action at this time.