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@aunyks
aunyks / snakecoin.py
Last active April 29, 2024 22:52
import hashlib as hasher
import datetime as date
# Define what a Snakecoin block is
class Block:
def __init__(self, index, timestamp, data, previous_hash):
self.index = index
self.timestamp = timestamp
self.data = data
self.previous_hash = previous_hash
@14251104246
14251104246 / 生成汉字图片.py
Created April 30, 2017 13:50
# -*- coding: utf-8 -*-
import sys
import xlrd
import pygame
from pypinyin import pinyin
import math
import os
import wx
@rajkrrsingh
rajkrrsingh / Google protobuf installation on Mac
Created November 27, 2016 10:57
Steps to Install google protobuf on Mac
$wget https://github.com/google/protobuf/releases/download/v2.5.0/protobuf-2.5.0.tar.bz2
$tar xvf protobuf-2.5.0.tar.bz2
$cd protobuf-2.5.0
$./configure CC=clang CXX=clang++ CXXFLAGS='-std=c++11 -stdlib=libc++ -O3 -g' LDFLAGS='-stdlib=libc++' LIBS="-lc++ -lc++abi"
$make -j 4
$sudo make install
$protoc --version
@gkhays
gkhays / DrawSineWave.html
Last active April 27, 2024 06:01
Oscillating sine wave, including the steps to figuring out how to plot a sine wave
<!DOCTYPE html>
<html>
<head>
<title>Sine Wave</title>
<script type="text/javascript">
function showAxes(ctx,axes) {
var width = ctx.canvas.width;
var height = ctx.canvas.height;
var xMin = 0;
@ursuad
ursuad / kafka-cheat-sheet.md
Last active March 14, 2024 10:32
Quick command reference for Apache Kafka

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

@subfuzion
subfuzion / curl.md
Last active May 9, 2024 18:17
curl POST examples

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

@arunoda
arunoda / gist:7790979
Last active February 16, 2024 14:05
Installing SSHPass

Installing SSHPASS

SSHPass is a tiny utility, which allows you to provide the ssh password without using the prompt. This will very helpful for scripting. SSHPass is not good to use in multi-user environment. If you use SSHPass on your development machine, it don't do anything evil.

Installing on Ubuntu

apt-get install sshpass

Installing on OS X

@suziewong
suziewong / git.md
Last active February 19, 2023 05:38
Git的多账号如何处理？ 1.同一台电脑多个git（不同网站的）账号 2.同一台电脑多个git（同一个网站的比如github的）多个账号

1.同一台电脑可以有2个git账号（不同网站的）

首先不同网站，当然可以使用同一个邮箱，比如我的github，gitlab，bitbucket的账号都是monkeysuzie[at]gmail.com 这时候不用担心密钥的问题，因为这些网站push pull 认证的唯一性的是邮箱 比如我的windows 上 2个账号一个gitlab 一个github （用的都是id_rsa）

host github
  hostname github.com
  Port 22

host gitlab.zjut.com