MrQianJinSi

FROM ubuntu:18.04

ARG MINOR_VERSION=3.16
ARG VERSION=3.16.9
ARG ARCH=Linux-x86_64


RUN  sed -i s@/archive.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list\
     && apt update \
     && apt install -y g++ cmake vim wget \

MrQianJinSi

VTable Notes on Multiple Inheritance in GCC C++ Compiler v4.0.1

http://www.cse.wustl.edu/~mdeters/seminar/fall2005/mi.html#basics

The Basics: Single Inheritance

As we discussed in class, single inheritance leads to an object layoutwith base class data laid out before derived class data. So if classes A and B are defined as:

MrQianJinSi

+-------------+-------+
| publishdate | count |
+-------------+-------+
| 2019-01-31  |    52 |
| 2019-04-30  |    48 |
| 2019-04-27  |    34 |
| 2019-04-26  |    30 |
| 2019-07-24  |    24 |
| 2019-07-23  |    16 |
| 2019-04-29  |    12 |

MrQianJinSi

import multiprocessing as mp
from multiprocessing.util import Finalize
import os
import time

def finalizer():
    time.sleep(0.2) # some time consuming work
    print('do cleanup work: {}'.format(os.getpid()))

def worker(_):

MrQianJinSi

import os
from urllib.parse import urljoin
import requests

def download_books(base_url, save_dir='books'):
    file_url = urljoin(base_url, 'files')
    res = requests.get(file_url)
    book_metas = res.json()

    if not os.path.exists(save_dir):

MrQianJinSi

# 通过ssh挂载远程文件系统
sudo apt install sshfs
sudo mkdir /mnt/remotefs
sudo sshfs -o allow_other,IdentityFile=~/.ssh/id_rsa username@xxx.xxx.xxx.xxx:/path/of/remote /mnt/remotefs
## 卸载
sudo umount /mnt/remotefs