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转载 C#方法作参数——关于Action和Func的使用

https://blog.csdn.net/wf824284257/article/details/83661843

2019-04-01 15:07:35 712

转载 Win10安装MySQL-python 1.2.5

转自http://cxy7.com/articles/2018/01/15/1516004300552.html，但是更正若干地方安装Microsoft Visual C++ Compiler for Python 2.7Microsoft Visual C++ Compiler for Python 2.7下载默认安装即可安装MySQL Connector/C注意选择正确的操...

2019-03-28 01:02:53 846

一、AWS1. Launch t2.micro ubuntu一台。2. 绑定security group，关闭除443和22之外的所有端口，443和22设为只允许本地访问。如果过了几天发现ping和ssh都没反应了，记得去把安全组里的本地IP更新一下。3. 加载security key。如没有则在线生成。4. 绑定elastic IP二、Putty拷贝public DNS IP到Putty，并设置...

2018-06-05 01:17:40 1890

转载 zigzag检测

https://www.mql5.com/en/articles/2774ContentsIntroductionFeatures of the ZigZag indicatorVariants of plotting the ZigzagSimple ZigZag based on High/LowSimple ZigZag based on CloseStarting

2018-01-27 22:43:27 1252

原创 Jenkins配置填坑若干

之前用的Jenkins都是别人配置好的现成的，这次因为是自己的项目，只能自己动手。根据官方教程 https://jenkins.io/doc/book/installing/#debian-ubuntu，安装过程还是很顺利的。安好之后就安心的睡觉去了。但是第二天想要再登录的时候，问题来了。根据自己头一天配置时设的用户名和密码怎么都登录不进去，最后查到https://stac

2017-12-25 00:20:55 653

转载 Install Oracle Java 8 / 9 in Ubuntu 16.04, Linux Mint 18

http://tipsonubuntu.com/2016/07/31/install-oracle-java-8-9-ubuntu-16-04-linux-mint-18/Quick tutorial for beginners how to easily install Oracle Java JDK8 or JDK9 in Ubuntu 16.04 or Linux Mint

2017-12-21 01:01:26 792 1

转载在centOS上安装Node

https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-a-centos-7-serverInstall a Package from the Node SiteAnother option for installing Node.js on your server is to

2017-11-07 10:53:51 432

转载 USING ES7 ASYNC/AWAIT TODAY WITH BABEL

http://masnun.com/2015/11/11/using-es7-asyncawait-today-with-babel.htmlLet’s take a code snippet that contains the demonstration of async/await — https://gist.github.com/patrickarlt/8c56a789e5f185eb97

2017-09-03 21:51:01 815

转载一小时包教会 —— webpack 入门指南

http://www.cnblogs.com/vajoy/p/4650467.htmlwebpack是近期最火的一款模块加载器兼打包工具，它能把各种资源，例如JS（含JSX）、coffee、样式（含less/sass）、图片等都作为模块来使用和处理。我们可以直接使用 require(XXX) 的形式来引入各模块，即使它们可能需要经过编译（比如JSX和sass），但我

2017-07-24 00:39:36 431

转载 HTTP cookies 讲解（HTTP cookies explained ）

https://my.oschina.net/hmj/blog/69638 HTTP cookies，通常又称作"cookies"，已经存在了很长时间，但是仍旧没有被予以充分的理解。首要的问题是存在了诸多误区，认为cookies是后门程序或病毒，或压根不知道它是如何工作的。第二个问题是对于cookies缺少一个一致性的接口。尽管存在着这些问题，cookies仍旧在web开发

2017-07-24 00:37:40 446

转载解决 Webpack "Invalid Host Header"

https://tonghuashuo.github.io/blog/webpack-dev-server-invalid-host-header.html一直以来都在用 Webpack 打包代码，配合 webpack-devserver 作 Hot Module Replacement 感觉棒棒哒，可以专心于程序逻辑，不用被无关紧要的琐事打扰。直到刚才……突如其来

2017-07-19 08:02:51 16070 1

转载 ES6模块的import和export用法总结

http://www.cnblogs.com/dupd/p/5951311.htmlES6之前已经出现了js模块加载的方案，最主要的是CommonJS和AMD规范。commonjs主要应用于服务器，实现同步加载，如nodejs。AMD规范应用于浏览器，如requirejs，为异步加载。同时还有CMD规范，为同步加载方案如seaJS。ES6在语言规格的层面上，实现了模块功能，

2017-07-12 13:46:53 697

转载数组操作小技巧

1. 原地清空数组（个人喜欢第二种）https://stackoverflow.com/a/1232046/2177408Ways to clear an existing array A:Method 1(this was my original answer to the question)A = [];This code will set th

2017-07-08 21:54:10 319

转载 ES7的Async/Await

https://cnodejs.org/topic/5640b80d3a6aa72c5e0030b6阅读本文前，期待您对promise和ES6(ECMA2015)有所了解，会更容易理解。本文以体验为主，不会深入说明，结尾有详细的文章引用。第一个例子Async/Await应该是目前最简单的异步方案了，首先来看个例子。这里我们要实现一个暂停功能，输入N毫秒，则停

2017-07-08 21:18:54 376

转载用ES6 Generator替代回调函数

http://www.html-js.com/article/A-day-to-learn-JavaScript-to-replace-the-callback-function-with-ES6-Generator目前，已经有很多文章讨论过了如何使用ES6 generators来取代JavaScript中经常遇到的“回调金字塔”。但是，其中提到的绝大多数方法都需要依赖于某个库，而

2017-07-04 10:24:29 385

转载 fetch API 简介

http://bubkoo.com/2015/05/08/introduction-to-fetch/十多年来，我们一直使用 XMLHttpRequest（XHR）来发送异步请求，XHR 很实用，但并不是一个设计优良的 API，在设计上并不符合职责分离原则，输入、输出以及状态都杂糅在同一对象中，并用事件机制来跟踪状态变化。并且，基于事件的模型与最近流行的 Promise 和 gener

2017-07-03 19:46:19 467

转载什么是跨域？

https://segmentfault.com/a/1190000000718840概念：只要协议、域名、端口有任何一个不同，都被当作是不同的域。URL 说明是否允许通信http://www.a.com/a.jshttp://www.a.com/b.js 同一域名下允许http://www.a.com

2017-03-16 15:20:45 434

转载 JSONP的优缺点

http://www.qdfuns.com/notes/18271/df9ecd8f0ca5e523ae75745a3996c47c.html 1.优点 1.1它不像XMLHttpRequest对象实现的Ajax请求那样受到同源策略的限制，JSONP可以跨越同源策略； 1.2它的兼容性更好，在更加古老的浏览器中都可以运行，不

2017-03-16 11:56:55 1121

转载 API 服务器搭建笔记：CentOS + Node.js + MongoDB

http://harttle.com/2015/02/24/node-web-api.html本文尝试在CentOS服务器上，使用js来构建整个web服务，包括nodejs运行时、MongoDB json风格数据库、redis内存数据库。首先安装这些软件：# centosyum install git nodejs npm mongodb mongodb-server r

2017-02-19 01:59:51 490

转载 How To Troubleshoot Common ELK Stack Issues

https://www.digitalocean.com/community/tutorials/how-to-troubleshoot-common-elk-stack-issuesIntroductionThis tutorial is an ELK Stack (Elasticsearch, Logstash, Kibana) troubleshooting gu

2017-02-19 01:42:53 2522

转载 Custom grok patterns for logstash

https://cinhtau.net/wp/custom-grok-patterns-for-logstash/grok is a powerful filter plugin. It allows you to use regular expressions (regex). This post gives some advices how to test and de

2017-02-19 01:36:51 632

转载 Refactoring Mongoose with Q

https://medium.com/@AdamRNeary/refactoring-mongoose-with-q-99d2759a97b6#.4hq41cfpfBetter API Code. I Promise.Yikes! Why is it that an engineer who generally writes beautiful, meticulous

2017-02-19 01:31:40 348

转载 Request —— 让 Node.js http请求变得超简单

https://segmentfault.com/a/1190000000385867先前一直比较关注前端的东西，对后端了解较少。不过一直对Node.js比较感兴趣，去年12月还去参加了阿里的CNODE交流聚会。以后希望通过这里的博客分享一些学习Node.js的笔记。一方面总结了自己的学习心得，另一方面也可以和大家一起分享交流。嗯，大概就是这样子。这篇就先介绍一个Nod

2017-02-19 01:28:02 404

转载 ReactJS component names must begin with capital letters?!

http://stackoverflow.com/questions/30373343/reactjs-component-names-must-begin-with-capital-lettersI am playing around with the ReactJS framework on JSBin.I have noticed that if my compone

2017-02-16 08:02:55 668

转载 What does the three dots in react do?

http://stackoverflow.com/a/41640566/2177408As you know ... are called spread operator which the name represents it allows an expression to be expanded.var parts = ['two', 'three'];var num

2017-02-02 07:37:31 440

转载 How to handle Mongoose DB connection interruptions

http://stackoverflow.com/questions/10873199/how-to-handle-mongoose-db-connection-interruptionsQ：Error: connection timeoutI've been evaluating Mongoose (an ORM for node.js which uses MongoDB

2017-01-14 16:35:17 369

转载 Do you want a timeout?

http://blog.mlab.com/2013/10/do-you-want-a-timeout/by chris on 2013/10/04 in GENERALYou’re feeling accomplished and excited; the new features for your application are finished, committed,

2017-01-14 16:33:03 368

转载 Kibana using lots memory

https://number1.co.za/category/elk/Is Digital Oceans 1-click-deploy ELK stack poorly configured on purpose?Kibana is using too much memoryI wanted to see what juicy stats and info I could

2017-01-14 16:26:33 743

转载 Logstash not showing any output (SOLVED)

https://discuss.elastic.co/t/logstash-not-showing-any-output-solved/28636/16By default Logstash will tail files. With start_position => beginning it will indeed read files from the beginning but

2017-01-11 13:43:59 533

转载 How to Install the ELK Stack on AWS: A Step-By-Step Guide

http://logz.io/blog/install-elk-stack-amazon-aws/By Asaf Yigal| October 13th, 2015|Blog, ELK StackThe ELK Stack is a great open-source stack for log aggregation and analy

2017-01-11 13:37:24 803

转载 How To Install Elasticsearch 1.7, Logstash 1.5, and Kibana 4.1 (ELK Stack) on Ubuntu 14.04

https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-1-7-logstash-1-5-and-kibana-4-1-elk-stack-on-ubuntu-14-04#conclusionNote: This tutorial is for an older version of

2017-01-11 13:34:38 873

转载 How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04

https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elk-stack-on-ubuntu-14-04#conclusionostedMarch 10, 2015 773.4kviews LOGGING NGINX MONITORING E

2017-01-11 13:33:36 750

转载 How To Install and Configure Elasticsearch on Ubuntu 14.04

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-elasticsearch-on-ubuntu-14-04PostedOctober 26, 2015 166.6kviews ELASTICSEARCH UBUNTUIntroductionElastics

2017-01-11 13:32:29 490

转载 Create a Grok Pattern

http://grok.nflabs.com/WhatIsPatternOverviewJava Grok exists to help you do fancier pattern matching with less effort. Grok lets you build (or use existing) sets of named regular express

2017-01-09 17:02:03 549

转载 Visualizing data with Elasticsearch, Logstash and Kibana

http://blog.webkid.io/visualize-datasets-with-elk/APRIL 16TH 2015 by ChristopherWhen designing visualizations, we sometimes have to deal with bigger datasets than standard tools can handle

2017-01-09 16:58:23 601

原创 Ubuntu中ELK安装和调试的一些要点

1. Query all records from Elasticsearchcurl -XGET "http://localhost:9200/logstash-*/_search?size=50&pretty"http://stackoverflow.com/a/38874465/21774082. Run logstash/opt/logstash/bin/logst

2017-01-09 12:29:40 727

转载 Logstash is not reading all the logs

https://discuss.elastic.co/t/logstash-is-not-reading-all-the-logs/61302I want my logstash to read the following pattern of files from the logs directoryCurrent Date File -> server.logHis

2017-01-09 10:04:45 394

转载 How to Set Up the ELK Stack- Elasticsearch, Logstash and Kibana

http://knowm.org/how-to-set-up-the-elk-stack-elasticsearch-logstash-and-kibana/Elastic Search, Logstash and Kibana – the ELK Stack – is emerging as the best technology stack to collect, manage

2017-01-09 07:58:23 1336

原创 Amazon EC2 Instance Express API配置HTTPS

最近在做一个API的项目，放在Amazon EC2上跑，为了提高安全性想把链接搞成HTTPS的。API放在Express上，GoDaddy上面没有Node Server配置的教程，搜到很多教程都是通过AWS Load Balancer来配置的，所以自己把各教程综合了一下，完成了配置。第一步：买一个SSL证书我看很多人都是自己签发证书。但是我因为有折扣，打完折之后$3/年，很便宜，就

2017-01-05 08:10:15 1789

转载使用 PuTTY 从 Windows 连接到 Linux 实例

http://docs.aws.amazon.com/zh_cn/AWSEC2/latest/UserGuide/putty.html#Transfer_WinSCP使用 PuTTY 从 Windows 连接到 Linux 实例启动您的实例之后，您可以连接到该实例，然后像使用您面前的计算机一样来使用它。Note启动实例后，需要几分钟准备好实例

2017-01-04 14:44:45 915

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