Tutorial by Examples: od

Adding Nodes to Neo4j Graph

results = News.objects.todays_news() for r in results: article = graph.merge_one("NewsArticle", "news_id", r) article.properties["title"] = results[r]['news_title'] article.properties["timestamp"] = results[r]['news_timestamp'] article.pus...

Python Language • Neo4j and Cypher using Py2Neo

Introduction

Sometimes we have another editor somewhere else instead of TinyMCE (Wordpress Default Editor). That happen when we are creating our own Theme, Plugin or something specific; and we need to write and manipulate a type of post and save it into our WP Database. So, if you are on that situation, you can...

WordPress • Create a Post Programmatically

Iterating over nodes

The NodeIterator interface provides methods for iterating over nodes in a DOM tree. Given a document like this one: <html> <body> <section class="main"> <ul> <li>List Item</li> <li>List Item</li> <li>Li...

DOM • Traversal

Optimizing Storage Layout for InnoDB Tables

In InnoDB, having a long PRIMARY KEY (either a single column with a lengthy value, or several columns that form a long composite value) wastes a lot of disk space. The primary key value for a row is duplicated in all the secondary index records that point to the same row. Create an AUTO_INCREME...

MySQL • Mysql Performance Tips

execute synchronous code asynchronous

If you want to execute synchronous code asynchronous (for example CPU extensive calculations), you can use Task.Run(() => {}). public async Task DoStuffAsync() { await DoCpuBoundWorkAsync(); } private async Task DoCpuBoundWorkAsync() { await Task.Run(() => { fo...

async-await • Getting started with async-await

Using Shortcodes in Widgets

add_filter( 'widget_text', 'shortcode_unautop' ); add_filter( 'widget_text', 'do_shortcode' );enter code here Add this to a plugin or the functions.php file to enable shortcodes in widgets. The code first stops WordPress turning line breaks into paragraph tags and then lets shortcodes to parse f...

WordPress • Shortcode

Code profiling

First and foremost you should be able to find the bottleneck of your script and note that no optimization can compensate for a poor choice in data structure or a flaw in your algorithm design. Secondly do not try to optimize too early in your coding process at the expense of readability/design/quali...

Python Language • Performance optimization

Node.js - under the hood

Node.js • Node.js Architecture & Inner Workings

Node.js - in motion

Node.js • Node.js Architecture & Inner Workings

Example debugging tool chain for user mode debugging on Windows

Visual Studio (IDE) WPA (performance analyzer) WinDbg (debugger) IDA Pro (disassembler) dotPeek (decompiler for .NET) WinMerge (diff tool) HxD or 010 editor (hex editor) Speedcrunch (calculator) Firefox (browser) Rohitab API monitor (API call monitoring) SOS (a WinDbg extension for .NET)...

debugging • Getting started with debugging

Setup paypal in your android code

1)First go through Paypal Developer web site and create an application. 2)Now open your manifest file and give the below permissions <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"...

Android • Android Paypal Gateway Integration

Caching Models Meta-Data.

Phalcon builds up some information about tables it is using, so it is possible to validate data being inserted to them without implementing everything by hand. Those are meta data for models. To speed up and prevent Phalcon from building Meta Data every time page is refreshed, it is possible to cach...

phalcon • Database Management

Core node.js debugger and node inspector

Using core debugger Node.js provides a build in non graphical debugging utility. To start the build in the debugger, start the application with this command: node debug filename.js Consider the following simple Node.js application contained in the debugDemo.js 'use strict'; function addTwoN...

Node.js • Debugging Node.js application

Framework-less node server

var http = require('http'); var fs = require('fs'); var path = require('path'); http.createServer(function (request, response) { console.log('request ', request.url); var filePath = '.' + request.url; if (filePath == './') filePath = './index.html'; var extname = String(path.extnam...

Node.js • Node server without framework

Match UK postcode

Regex to match postcodes in UK The format is as follows, where A signifies a letter and 9 a digit: FormatCoverageExampleCellCellAA9A 9AAWC postcode area; EC1–EC4, NW1W, SE1P, SW1EC1A 1BBA9A 9AAE1W, N1C, N1PW1A 0AXA9 9AA, A99 9AAB, E, G, L, M, N, S, WM1 1AE, B33 8THAA9 9AA, AA99 9AAAll other postco...

Regular Expressions • Useful Regex Showcase

DBI module

You should make sure that module DBI has been installed on your pc, then follow the bellow steps: use DBI module in your perl script use DBI; Declare some primary parameters my $driver = "MyDriver"; my $database = "DB_name"; my $dsn = "DBI:$driver:dbname=$datab...

Perl Language • Simple interaction with database via DBI module

Check installed perl modules via terminal

Type below command: instmodsh It'll show you the guild as below: Available commands are: l - List all installed modules m <module> - Select a module q - Quit the program cmd? Then type l to list all the installed modules, you can also use command m &l...

Perl Language • Easy way to check installed modules on Mac and Ubuntu

Setting proxy in Python code

If your code is running behind a proxy and you know the end point, you can set this information in your code. requests accepts a proxies parameter. This should be a dictionary that maps protocol to the proxy URL. proxies = { 'http': 'http://proxy.example.com:8080', 'https': 'http://securepro...

python-requests • Using requests behind a proxy

Node ES6 Support and creating a project with Babel

The whole ES6 spec is not yet implemented in its entirety so you will only be able to use some of the new features. You can see a list of the current supported ES6 features at http://node.green/ Since NodeJS v6 there has been pretty good support. So if you using NodeJS v6 or above you can enjoy usi...

Node.js • Node.JS with ES6

Install Plugins on Xcode 7

Xcode by itself has quite a few good tools built in, but sometimes you just want to change a specific behavior or create a convenience shortcut. That's why there's Alcatraz. Installation curl -fsSL https://raw.githubusercontent.com/supermarin/Alcatraz/deploy/Scripts/install.sh | sh Throw this ...

Xcode • Xcode Tips