Fity Yang Fity

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

Learning Rust

The following is a list of resources for learning Rust as well as tips and tricks for learning the language faster.

Warning

Rust is not C or C++ so the way your accustomed to do things in those languages might not work in Rust. The best way to learn Rust is to embrace its best practices and see where that takes you.

The generally recommended path is to start by reading the books, and doing small coding exercises until the rules around borrow checking become intuitive. Once this happens, then you can expand to more real world projects. If you find yourself struggling hard with the borrow checker, seek help. It very well could be that you're trying to solve your problem in a way that goes against how Rust wants you to work.

	import functools

	import graphene
	from graphene.utils.str_converters import to_snake_case
	from graphql import get_default_backend
	import logging

	import time

	from flask import request, current_app

	from datetime import datetime
	from sqlalchemy import Column, Integer, DateTime, ForeignKey
	from sqlalchemy.orm import relationship
	from sqlalchemy.ext.declarative import declared_attr
	from flask_security import current_user


	class AuditMixin(object):
	created_at = Column(DateTime, default=datetime.now)
	updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)

	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>

	// munged from https://github.com/simontime/Resead

	namespace sead
	{
	class Random
	{

	'use strict';
	/jshint node:true /

	// npm install lodash colors minimist request sync-request

	var _ = require('lodash'),
	colours = require('colors/safe'),
	parseArgs = require('minimist'),
	request = require('request'),
	requestSync = require('sync-request'),

	# -- coding: utf-8 --

	# Gunicorn(v19.3) Configuration File
	# Reference - http://docs.gunicorn.org/en/19.3/settings.html
	#
	# To run gunicorn by using this config, run gunicorn by passing
	# config file path, ex:
	#
	# $ gunicorn --config=gunicorn.py MODULE_NAME:VARIABLE_NAME
	#

	# Due to the flexible nature of Flask. This might be __init__.py
	from .extensions import huey

	def create_app():
	app = Flask(__name__)

	# add your configurations
	# app.config.from_object("settings.local")

	huey.init_app(app)