Tutorials Index Page 8


How to compile and upload code to NodeMCU ESP8266

In this tutorial we are going to setup an arduino IDE to developer for the NodeMCU CP2102 ESP8266 ESP-12F with the LCD module. Here we will use a project that uses WiFi and we will show network activity on the LCD. Learn how to develop and upload code to this amazing board!. Check here for full details


JavaScript: How to know if and Object is empty?

In general there is now way to check is a javascript object is empty. We create a new function to verify if the object is empy. As an optional step we add it to the object prototype.


JavaScript: Learn key value iteration

Learn key value iteration with some helpful examples. We also cover some examples using jQuery.


Bootstrap 4 Navbar Breakpoint (we also cover 3.1 and older)

When making responsive sites with bootstrap is common to have problems when navbar collapses. Sometimes the navbar collapses too soon or too late. Bootstrap 4 has added support to solve this problem using new classes. The componen has navbar-expand-* classes. check here for more details.

Ubuntu 18.04: Installing Apache2 + PHP5 + MySQL + phpMyAdmin

In this short tutorial we explain how to install phpmyadmin with apache 2 on ubuntu 18.04.


Go: How to write/read data to a CSV file?

Learn how to write/read data to a csv file using the go lenguage


Go: How to search and replace text using golang?

In this tutorial we are going to explain how to use string.Replace function and Replacer class. We are going to show you some example code.


Golang: How to Check If a File Exists Before Using It

Learn GO lang with basic examples, we tech you how to check if a file exists using GO os package. Checking if a file exists could be a little tricky since we focus on the error returned instead of a result.


How To Known what DNS Servers Address you are using

To see you dns servers on linux execute: cat /etc/resolv.conf. For windows ipconfig /all. check this artcile for more details.


Learn how To Use grep Command.

Improve as a system administrator or as a software developer and learn how to use the very useful command grep. We cover some basic usage and some advance usage. Learn here how to use regular expression with grep and how to search recursively with grep.