tennisonchan

#!/bin/sh

INTERVAL=2
if [ -n $2 ]
then
  INTERVAL=$2
fi

while :;
do

tennisonchan

{
  "gists": [
    {
      "id": "69901fd5fa48cb0d03f5f3bcf48c9f63",
      "include": "*://localhost:8000/*",
      "files": [
        {
          "name": "hexo-demo",
          "ext": "css",
          "url": "https://cdn.rawgit.com/tennisonchan/69901fd5fa48cb0d03f5f3bcf48c9f63/raw/b71ce90920ded75b477513de11baafd0ed6aed6a/hexo-demo.css"

tennisonchan

SET SERVEROUTPUT ON
DECLARE
  v_ts TIMESTAMP;
  v_repeat CONSTANT NUMBER := 100000;
BEGIN
  v_ts := SYSTIMESTAMP;
     
  FOR i IN 1..v_repeat LOOP
    FOR rec IN (
      -- Worst query: Memory overhead AND table access

tennisonchan

/*

Prompt: Implement mySetInterval() and myClearInterval() as functions that behave exactly like setInterval() and clearInterval(). Obviously, you’re not allowed to use setInterval() in your implementation, but everything else is fair game.
Time: This shouldn’t take too long - please don’t spend more than an hour working on it.
Rules: You may consult MDN for documentation, but you may not use any other resources.
Goals: We’re looking for clean code and quick implementation, so please send in your solution as soon as you finish.

*/

// ### MDN setInterval documentation

tennisonchan

#!/usr/bin/env bash

# 'Wi-Fi' or 'Ethernet' or 'Display Ethernet'
INTERFACE=Wi-Fi

# Ask for the administrator password upfront
sudo -v

# Keep-alive: update existing `sudo` time stamp until finished
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &

tennisonchan

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
// Following IEEE754 [Double-precision floating-point format](https://en.wikipedia.org/wiki/Double-precision_floating-point_format)
// Not Support in IE

Number.MAX_SAFE_INTEGER // 9007199254740991
Number.MIN_SAFE_INTEGER // -9007199254740991

// Fun fact
Number.MAX_SAFE_INTEGER + 1 == Number.MAX_SAFE_INTEGER + 2 // => true

tennisonchan

Keybase proof

I hereby claim:

• I am tennisonchan on github.
• I am tennisonchan (https://keybase.io/tennisonchan) on keybase.
• I have a public key whose fingerprint is 2451 8B43 67F4 F4D6 2ED7 33DB 7C4E 1A7D 7B9F D219

To claim this, I am signing this object:

tennisonchan

let randomArray = (len=10, max=100) => [...new Array(len)].map(() => Math.floor(Math.random() * max))

let randomArrayOld = function(len, max) {
  return Array.apply(null, Array(len)).map(function() {
    return Math.floor(Math.random() * max);
  });
}

let normalArray = (len=10) => [...new Array(len)].map((a,i) => i);

tennisonchan

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators

(-3 >>> 0).toString(2)
// 11111111111111111111111111111101 => -3

(-9 >>> 2).toString(2)
// 00111111111111111111111111111101 => 1073741821

(-9 >> 2).toString(2)
// 11111111111111111111111111111101 => -3

tennisonchan

Scope

Lexical Scope

Hoist