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function isPalindrome(str) {
    str = str.replace(/\W/g, '').toLowerCase();
    return (str == str.split('').reverse().join(''));
}

grigorkh

Usage:
{
    "GET": "https://qr.eyme.io/api/?url=http://goo.gl/9DhbLX"
}

Response Example:
{  
    "vendor":"Gago Inc.",
    "model":"Aram",
    "screen_to_lens_distance":0.041999999433755875,

grigorkh

function add() {
	var sum = 0;
	
	function add() {
		for (var i=0; i<arguments.length; i++) {
			sum += Number(arguments[i]);
		}
		return add;
	}
	add.valueOf = function valueOf(){

grigorkh

let instance = null;

export class Cache{  
    constructor() {
        if(!instance){
              instance = this;
        }

        this.time = new Date()

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'use strict';

/**
 * Created by Alexander Litvinov
 * Email: [email protected]
 * May be freely distributed under the MIT license
 */

let singleton = Symbol();
let singletonEnforcer = Symbol();

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//two main tasks are 'gulp watch' and 'gulp build'

//dependencies:
var gulp = require('gulp');
    //to use in conjunction with chrome plugin:
    livereload = require('gulp-livereload');
    //for css:
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifycss = reqwuire('gulp-minify-css'),

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#!/bin/bash
#
# bash < <(curl -s https://gist.githubusercontent.com/grigorkh/17285401e6be1b7950f638dd58a8d0a3/raw/cbbd7fd2205e1aebdf79649b98d598e4344040c2/ngx-lua.bash)

set -x
cd /tmp

if ! test -d /usr/local/include/luajit-2.0; then
    echo "Installing LuaJIT-2.0.4."
    wget "http://luajit.org/download/LuaJIT-2.0.4.tar.gz"

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#!/bin/bash
#
# bash < <(curl -s https://gist.githubusercontent.com/grigorkh/6fbab691f85f2ecd1bed0e2824316bef/raw/e3017e8b485f28e5d9119c77daf4f21717ccea2d/ngx-lua-redis.bash)

set -x

cd /tmp
echo "Installing LuaJIT-2.0.4."
wget "http://luajit.org/download/LuaJIT-2.0.4.tar.gz"
tar -xzvf LuaJIT-2.0.4.tar.gz

grigorkh

How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

There are two modes when you don't want Certbot to edit your configuration:

• Standalone: replaces the webserver to respond to ACME challenges
• Webroot: needs your webserver to serve challenges from a known folder.

Webroot is better because it doesn't need to replace Nginx (to bind to port 80) to renew certificates.

In the following, we're setting up mydomain.com to be served from /var/www/mydomain, and challenges will be served from /var/www/letsencrypt.

grigorkh

Running shell scripts that have contain sudo commands in them from jenkins might not run as expected. To fix this, follow along
Simple steps:
1. On ubuntu based systems, run " $ sudo visudo "
2. this will open /etc/sudoers file.
3. If your jenkins user is already in that file, then modify to look like this:

jenkins ALL=(ALL) NOPASSWD: ALL
4. save the file by doing Ctrl+O  (dont save in tmp file. save in /etc/sudoers, confirm overwrite)
5. Exit by doing Ctrl+X
6. Relaunch your jenkins job