Uncategorized – Page 2 – Moazzam's Ramblings

Go: Declaring and using objects

Go (or Golang) doesn’t have the concept of classes. The class equivalent in Go loos like this:

  // Make a Car class equivalent
  type Car struct {
    // object properties go here
    doors int

  }

  // Get the number of doors 
  func (car *Car) Doors() int {
    return car.doors
  }

  // Set the number of doors in a car
  func (car *Car) SetDoors(doors int) {
    car.doors = doors
  }

// Make a Car class equivalent

type Car struct {

// object properties go here

doors int

}

// Get the number of doors

func (car *Car) Doors() int {

return car.doors

}

// Set the number of doors in a car

func (car *Car) SetDoors(doors int) {

car.doors = doors

}

The above declaration can now be used as an object like so:

  import fmt

  func main() {
    lamborgini := new(Car)
    lamborgini.setDoors(2)

    fmt.Println("This lamborgini has: " + lamborgini.Doors()  + " Doors")    
  }

import fmt

func main() {

lamborgini := new(Car)

lamborgini.setDoors(2)

fmt.Println("This lamborgini has: " + lamborgini.Doors() + " Doors")

}

First impressions of Go

I have been in search for a language I can use for web programming, writing computationally intensive and general scripting among other things. The language that came close to fitting all of these things was Racket, a dialect of Chicken Lisp. It can even do geometry drawings. However, there were issues with it so I […]

Programming Macros for Ergodox

The default configuration tool on Input Club or Massdrop don’t allow for macro programming. So you will have to get your hands dirty and mess with the firmware code a little. It’s not hard. Run the following commands on your terminal to clone Ben Blazak’s firmware code from github and create a custom layout for […]

What should I learn?

This is a question I get asked a lot. Mostly by those who are just starting off their career as programmers/developers, but often times also by veterans of IT field. Recently, I found myself asking that question when I came to the realization that PHP, as a language was not as much in demand as […]

Macports Ruby: Symbol not found: _SSLv2_client_method error

This error usually shows up when you try to run the following command:

sudo gem install <any-bundle-here>

1	sudo gem install <any-bundle-here>

For those that don’t know what I am talking about, this is the error message:

ERROR:  Loading command: install (LoadError)
	dlopen(/opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle, 9): Symbol not found: _SSLv2_client_method
  Referenced from: /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle
  Expected in: /opt/local/lib/libssl.1.0.0.dylib
 in /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle - /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle

ERROR: Loading command: install (LoadError)

dlopen(/opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle, 9): Symbol not found: _SSLv2_client_method

Referenced from: /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle

Expected in: /opt/local/lib/libssl.1.0.0.dylib

in /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle - /opt/local/lib/ruby2.2/2.2.0/x86_64-darwin15/openssl.bundle

The only way to get this to go away is to re-compile ruby so it will use the new openSSL library. Macports, however, installs packages […]

Setting, removing and reading cookies in Javascript

Copy/paste these methods and use them

/**
 * Create a cookie
 * 
 * @param string  name
 * @param mixed   value
 * @param int     days
 */
function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

/**
 * Read a cookie
 *
 * @param string  name 
 */
function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

/**
 * Remove a cookie
 * 
 * @param string  name
 */
function eraseCookie(name) {
    createCookie(name,"",-1);
}

/**

* Create a cookie

* @param string name

* @param mixed value

* @param int days

function createCookie(name,value,days) {

if (days) {

var date = new Date();

date.setTime(date.getTime()+(days*24*60*60*1000));

var expires = "; expires="+date.toGMTString();

}

else var expires = "";

document.cookie = name+"="+value+expires+"; path=/";

}

/**

* Read a cookie

* @param string name

function readCookie(name) {

var nameEQ = name + "=";

var ca = document.cookie.split(';');

for(var i=0;i < ca.length;i++) {

var c = ca[i];

while (c.charAt(0)==' ') c = c.substring(1,c.length);

if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

}

return null;

}

/**

* Remove a cookie

* @param string name

function eraseCookie(name) {

createCookie(name,"",-1);

}

Sunlit Garden

I have been painting landscapes mostly so I wanted to try something different this time. Another reason I wanted to do this painting is to experiment with sunlight (and little details like the gate) change how the viewer feels when he/she looks at the painting. Thankfully, my experiment was successful. Here is the painting: I […]

Ergodox: Make LEDs indicate the layer you are on

This article assumes that you are working with the source code downloaded from MassDrop. Open the file lib /key-functions/public/basic.c and add the following line below after all the #define statements.

extern uint8_t keyboard_leds;

1	extern uint8_t keyboard_leds;

Then go to the push function of the layer you want the LEDs to light up on. Let’s assume we want to turn on […]

Ergodox – The customizable ergonomic split keyboard

A few months ago, I got a mechanical keyboard called Ergodox. It is an open source keyboard (which means its schematics are posted online for anyone who wants to build it.) that you need to build yourself. You cannot buy it pre-built. Although, recently people have been putting up Ergodox with Cherry MX blue switches. […]

My mechanical keyboard

In my last post, I talked about mechanical keyboards and how great they are to type on. I figured I would show you guys what my keyboard looked like. I have a Corsair K60 with custom key caps (well some of them are custom). Corsair did a great job with the keyboard and the only […]

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