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NERDTree

o.......Open files, directories and bookmarks....................|NERDTree-o|
go......Open selected file, but leave cursor in the NERDTree.....|NERDTree-go|
t.......Open selected node/bookmark in a new tab.................|NERDTree-t|
T.......Same as 't' but keep the focus on the current tab........|NERDTree-T|
i.......Open selected file in a split window.....................|NERDTree-i|
gi......Same as i, but leave the cursor on the NERDTree..........|NERDTree-gi|
s.......Open selected file in a new vsplit.......................|NERDTree-s|
gs......Same as s, but leave the cursor on the NERDTree..........|NERDTree-gs|

O.......Recursively open the selected directory..................|NERDTree-O|

biaocy

function getQueryObj(url) {
  let re = /[?&]+(\w+)(?:=([\w%\.]*))*/g;
  let results, ret = {};
  while ((results = re.exec(url)) !== null) {
    let [m, k, v] = results; // array destructuring
    ret[k] = v;
  }
  return ret;
}

biaocy

This has been moved into the official Chef docs:

https://docs.chef.io/custom_resources_notes.html

12.5 style custom resources

This is by far the most recommended way of writing resources for all users. There are two gotchas which we're working through:

1. For helper functions that you used to write in your provider code or used to mixin to your provider code, you have to use an action_class do ... end block.

biaocy

#!/bin/bash

#zimuzu video id
vid="$1"
#season: S01 etc
season="$2"
#output file name
fname="${3-$vid}.$season.`date +%Y%m%d`.json"

biaocy

Blog about "How Spring Mvc Work"

1.how request url match? Hint: With namespace <mvc:annotation-driven />, it's use of RequestMappingHandleMapping.

A.With "WebMVC" enabled, it will register a couple of HandleMapping and HandleAdapter
当 "WebMVC" enabled 时，Spring 默认会注册一些 HandleMapping 和 HandleAdapter
By default:
	1.RequestMappingHandleMapping
	2.RequestMappingHandlerAdapter

biaocy

var count = document.querySelectorAll('#currencies-all > tbody > tr').length;
var data = document.querySelectorAll('#currencies-all > tbody > tr > td:nth-last-child(-n+3)');
var h1 = {'up': 0, 'down': 0, 'zero': 0};	//1 hour change
var h24 = {'up': 0, 'down': 0, 'zero': 0};	//24 hours change
var d7 = {'up': 0, 'down': 0, 'zero': 0};	//7 days change

for (let i = 0; i < data.length; i+=3) {
	let a = Number(data[i].dataset.usd), b = Number(data[i+1].dataset.usd), c = Number(data[i+2].dataset.usd);
	if (a > 0) h1.up++;
	else if (a < 0) h1.down++;

biaocy

//from https://stackoverflow.com/a/11172083

var date = new Date();
date.setMinutes(date.getMinutes() - date.getTimezoneOffset());
date.toJSON(); //2017-12-17T17:51:45.055Z

biaocy

cat /dev/urandom | tr -cd 'a-zA-Z0-9' | fold -w 32 | head -n 1

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#curl -s https://bittrex.com/api/v1.1/public/getmarketsummary?market=btc-neo | awk -F , '{print }' | awk -F : '{print }'

date=`date +"%FT%T"`
log="/var/log/neo.log"
url="https://bittrex.com/api/v1.1/public/getmarketsummary?market=btc-neo"
subject="NEO"
threshold="0.003"
mailto="email" # email here

msg=`curl -s $url`

biaocy

function cx(lastM, r) { //求圆心到等边形的垂直距离
    return Math.sqrt(r-Math.pow(lastM/2, 2));
}

function cm(lastM, r) { //求等边形边长
    var x = cx(lastM, r); //圆心到等边形边的垂直距离
    return Math.sqrt(Math.pow(r-x, 2) + Math.pow(lastM/2, 2));
}

function pi(t) {