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Lex Sheehan
35 followers -
Full stack developer
Full stack developer

35 followers
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Strategy Design Pattern Using Ruby
Back when I worked in Global Business Services at IBM, I participated in a Design Patterns user group. It was moderated by a super smart dude, "Coop". We studied the patterns found in the Gang of Four book and worked through coding examples in Java each tim...

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Docker DevOps Around the Globe
When I completed the Docker Birthday #3 App Challenge I was presented with the following telling globe image that shows where Docker DevOps is occurring around the Globe: Successful Lab Completions Per Country Analysis The biggest surprise, for me, were the...

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Escaping Ruby Strings
The Rules 1. If possible, use single quotes ( ' ) 2. If you have a single line that needs interpolation, without inline double quotes, do the following: "#{name} says, 'Hey!'" 3. If you have multiple lines use %[ <MUILTI_LINE_INTERPOLATION> ] Note that %[ ]...

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Today's Cloud Architecture
Automating deployments with Constant Integration (CI) and Constant Deployments (CD) have improved our Software Development Life Cycle (SDLC) dramatically. Most corporations doing any software development have figured out that it is better to integrate chang...

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Today's Cloud Architecture
Automating deployments with Constant Integration (CI) and Constant Deployments (CD) have improved our Software Development Life Cycle (SDLC) dramatically. Most corporations doing any software development have figured out that it is better to integrate chang...

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21 CFR Part 11 and the SDLC
In this posting, I will attempt to address the challenges posed by the FDA 21 CFR Part 11, which is a law aimed at ensuring that companies implement good business practices, in their developing software efforts to meet said requirements. Background Definiti...

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Search and Replace
Here's a quickie, but goodie... sed-i -e "s/alice/bob/g" data.json That will replace every instance of "alice" with "bob" in the file, data.json This work is licensed under the Creative Commons Attribution 3.0 Unported License .

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Page Up & Down in VIM and ITerm2
Sometimes I just forget the easy stuff... VIM PAGE UP CTRL+b PAGE DOWN CTRL+f ITERM2 PAGE UP fn+Command+UpArrow PAGE DOWN fn+Command+DownArrow References Make iTerm 2 More Mac-like VIM QUICK REFERENCE CARD This work is licensed under the Creative Commons At...

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Docker Ecosystem
Docker is a containerization platform that is used to develop, distribute and deploy applications in a portable and predictable way. It accomplishes this by packaging components and their dependencies into standardized, lightweight process environments call...

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Golang Pointers on the Heap
In this post we'll delve into the differences between the Stack and the Heap and decompile some Go code to see how the new function allocates space on the heap struct and returns its 8 byte pointer. The Stack The stack is the memory that is used to store lo...
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