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Wandering

Hugo Wang mitnk

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mitnk / main.rs
Created December 22, 2018 09:41
Lifetime with Thread (Mutex, Arc) in Rust
// Thanks: https://stackoverflow.com/a/53894298/665869
use std::collections::HashMap;
use std::sync::{Arc, Mutex};
use std::thread;
type Map = HashMap<String, String>;
fn handle_n_times(count: i32, arc_map: Arc<Mutex<Map>>) {
for i in 0..count {
let clone_arc = arc_map.clone();
@mitnk
mitnk / history_couchdb.py
Last active March 17, 2022 22:12
xonsh history backend with couchdb
"""
xonsh history backend with couchdb.
Copy this file to "~/.xonsh/history_couchdb.py" and put the following
into your "~/.xonshrc" file.
import os.path
import sys
xonsh_ext_dir = os.path.expanduser('~/.xonsh')
if os.path.isdir(xonsh_ext_dir):
@mitnk
mitnk / migrate.py
Last active January 24, 2017 01:58
xonsh migrate history items
from xonsh.history.json import JsonHistory
from xonsh.history.sqlite import SqliteHistory
hist_json = JsonHistory(gc=False)
# if you want to have a check first
print('have {} json items'.format(len(list(hist_json.all_items())))) # may very slow here
hist_db = SqliteHistory(gc=False)
for item in hist_json.all_items():
@mitnk
mitnk / dbg.h
Last active August 29, 2015 14:17
A C logger header
// via: http://c.learncodethehardway.org/book/ex20.html
#ifndef __dbg_h__
#define __dbg_h__
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <time.h>
@mitnk
mitnk / simplify_dict_cn_scb.js
Created August 12, 2014 08:41
Simplify dict cn 的生词本
// ==UserScript==
// @name Simplify Dict.cn
// @namespace http://mitnk.com
// @version 0.1
// @description Simplify dict cn 的生词本
// @match http://scb.dict.cn/card.php*
// @copyright 2014+, mitnk
// for tampermonkey on Chrome.
// ==/UserScript==
@mitnk
mitnk / tailf_least_postgresql_log.sh
Last active August 29, 2015 14:03
Tailf lastest PostgreSQL Log
path=`ps ax | grep -i 'postmaster' | grep -o '\-D\(/Library/Post.*\)' | awk -F D '{print $NF}'`
log_dir="${path}/pg_log"
log_name=`sudo ls -1t ${log_dir} | head -n1`
log_file="${log_dir}/${log_name}"
echo ""
echo "=========== $log_file =========="
echo ""
sudo tail -f "$log_file"
@mitnk
mitnk / install_grep.sh
Created May 12, 2014 08:05
Install lastest GNU grep
mkdir -p tmp_dir_to_install_grep
cd tmp_dir_to_install_grep
wget https://ftp.gnu.org/gnu/grep/grep-2.18.tar.xz
tar xf grep-2.18.tar.xz
cd grep-2.18/
./configure && make && sudo make install
@mitnk
mitnk / download_pycon_2013_videos.py
Last active December 15, 2015 06:09
Download all Pycon 2013 Video
from urllib2 import urlopen
from subprocess import Popen, PIPE
from bs4 import BeautifulSoup
page = urlopen('http://pyvideo.org/category/33/pycon-us-2013')
soup = BeautifulSoup(page)
video_url_list = []
count = 0
@mitnk
mitnk / pptp_64.sh
Created January 4, 2013 18:25
Install PPTP VPN on Amazon EC2 (test)
yum remove -y pptpd ppp
iptables --flush POSTROUTING --table nat
iptables --flush FORWARD
rm -rf /etc/pptpd.conf
rm -rf /etc/ppp
wget http://poptop.sourceforge.net/yum/stable/packages/dkms-2.0.17.5-1.noarch.rpm
wget http://poptop.sourceforge.net/yum/stable/packages/kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm
wget ftp://ftp.muug.mb.ca/mirror/centos/6.3/os/x86_64/Packages/ppp-2.4.5-5.el6.x86_64.rpm
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.3.4-2.el6.x86_64.rpm
@mitnk
mitnk / six_animals.py
Created December 23, 2012 06:56
有豹子,老虎,狮子,都一大一小,三个大的和小老虎都会划船,其他两个 不会划,每次只能过两个,大吃小（没有大的在保护就被吃掉）. 这2个动物怎样才能过河？ P.S. 算法还不完美，输出了多余的东东。
#encoding=utf8
"""
有豹子,老虎,狮子,都一大一小,三个大的和小老虎都会划船,其他两个
不会划,每次只能过两个,大吃小（没有大的在保护就被吃掉）.
这2个动物怎样才能过河？
"""
from itertools import combinations
def is_bad(L):