diff --git a/_config.yml b/_config.yml
index b1fa03e..3d31747 100644
--- a/_config.yml
+++ b/_config.yml
@@ -29,6 +29,8 @@ theme: minima
collections:
homelab:
output: true
+ programming:
+ output: true
# Exclude from processing.
# The following items will not be processed, by default. Create a custom list
diff --git a/_layouts/post.html b/_layouts/programming.html
similarity index 66%
rename from _layouts/post.html
rename to _layouts/programming.html
index 0b28e6b..77d7448 100644
--- a/_layouts/post.html
+++ b/_layouts/programming.html
@@ -1,6 +1,6 @@
---
layout: default
---
-
+
{{ content }}
diff --git a/_programming/2019-02-05-ruby2.6+-array#difference.markdown b/_programming/2019-02-05-ruby2.6+-array#difference.markdown
new file mode 100644
index 0000000..329f53d
--- /dev/null
+++ b/_programming/2019-02-05-ruby2.6+-array#difference.markdown
@@ -0,0 +1,61 @@
+---
+layout: programming
+title: "Ruby 2.6+ Array#Difference"
+date: 2019-02-05
+categories: programming
+---
+
+# Array#Difference - [Array#Difference](https://github.com/ruby/ruby/blob/trunk/array.c#L4450-L4563)
+I wanted to do a quick post on a new method added to ruby Array class in version 2.6. I just learned about this over the past weekend.
+This will quickly grow to be a favorite of mine.
+
+A method to check differences in values between two arrays.
+
+#### Make arrays abc and abcdef
+
+{% highlight ruby %}
+[1] pry(main)> abc = ['a','b','c']
+=> ["a", "b", "c"]
+
+[2] pry(main)> abcdef = 'a', 'b', 'c', 'd', 'e', 'f'
+=> ["a", "b", "c", "d", "e", "f"]
+{% endhighlight %}
+
+
+
+
+
+#### ruby 2.5
+In versions prior, I would make a .difference method in my .pryrc file and that
+will be loaded at runtime when I run my console. You can also monkey patch it
+live in a pry console. Found this via
+[stackedoverflow](https://stackoverflow.com/questions/8639857/rails-3-how-to-get-the-difference-between-two-arrays)
+post. Here is how I would add it in a running pry session:
+
+{% highlight ruby %}
+[17] pry(main)> class Array
+[17] pry(main)* def difference(a)
+[17] pry(main)* self - a | a - self
+[17] pry(main)* end
+[17] pry(main)* end
+=> :difference
+
+[26] pry(main)> abcdef.difference(abc)
+=> ["d", "e", "f"]
+
+{% endhighlight %}
+
+
+
+
+
+#### ruby 2.6
+But now in ruby 2.6+, you can just use the .difference method. It is built into
+the class now.
+
+{% highlight ruby %}
+[3] pry(main)> abcdef.difference(abc)
+=> ["d", "e", "f"]
+{% endhighlight %}
+
+so nice, so easy!
diff --git a/css/screen.css b/css/screen.css
index cf4acca..67488f8 100644
--- a/css/screen.css
+++ b/css/screen.css
@@ -51,12 +51,19 @@ table {
font: 100%;
}
+hr {
+ margin-top: 10px;
+ margin-bottom: 10px;
+}
+
+
/*****************************************************************************/
/*
/* Home
/*
/*****************************************************************************/
+# posts
ul.posts {
list-style-type: none;
margin-bottom: 2em;
@@ -72,6 +79,7 @@ ul.posts {
font-size: 80%;
}
+# homelab
ul.homelab {
list-style-type: none;
margin-bottom: 2em;
@@ -87,6 +95,23 @@ ul.homelab {
font-size: 80%;
}
+
+# programming
+ul.programming {
+ list-style-type: none;
+ margin-bottom: 2em;
+}
+
+ ul.programming li {
+ line-height: 1.75em;
+ }
+
+ ul.programming span {
+ color: #aaa;
+ font-family: Monaco, "Courier New", monospace;
+ font-size: 80%;
+ }
+
/*****************************************************************************/
/*
/* Site
diff --git a/index.html b/index.html
index 918401f..830d610 100644
--- a/index.html
+++ b/index.html
@@ -10,9 +10,17 @@ title: brendan mcdevitt
{{ post.date | date_to_string }} » {{ post.title }}
{% endfor %}
+
Homelab Posts
{% for post in site.homelab %}
- {{ post.date | date_to_string }} » {{ post.title }}
{% endfor %}
+
+
Programming
+
+ {% for post in site.programming %}
+ - {{ post.date | date_to_string }} » {{post.title }}
+ {% endfor %}
+