Design Patterns Training Classes in Washington D C, Maryland
Learn Design Patterns in Washington D C, Maryland and surrounding areas via our hands-on, expert led courses. All of our classes either are offered on an onsite, online or public instructor led basis. Here is a list of our current Design Patterns related training offerings in Washington D C, Maryland: Design Patterns Training
Design Patterns Training Catalog
Course Directory [training on all levels]
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- RED HAT ENTERPRISE LINUX SYSTEMS ADMIN II
8 December, 2025 - 11 December, 2025 - Python for Scientists
8 December, 2025 - 12 December, 2025 - ASP.NET Core MVC (VS2022)
24 November, 2025 - 25 November, 2025 - Introduction to Spring 6, Spring Boot 3, and Spring REST
15 December, 2025 - 19 December, 2025 - RHCSA EXAM PREP
17 November, 2025 - 21 November, 2025 - See our complete public course listing
Blog Entries publications that: entertain, make you think, offer insight
I remember the day like it was yesterday. Pac Man had finally arrived on the Atari 2600. It was a clear and sunny day, but it was slightly brisk. My dad drove us down to the video store about three miles from our Michigan house. If I remember correctly, the price for the game was $24.99. It was quite expensive for the day, probably equaling a $70 game in today’s market, but it was mine. There *was* no question about it. If you purchase a game, it’s your game… right?
You couldn’t be more wrong. With all the licensing agreements in games today, you only purchase the right to play it. You don’t actually “own” the game.
Today, game designers want total control over the money that comes in for a game. They add in clauses that keep the game from being resold, rented, borrowed, copied, etc. All of the content in the game, including the items you find that are specifically for you, are owned by the software developer. Why, you ask, do they do this? It’s all about the money.
This need for greed started years ago, when people started modifying current games on the market. One of the first games like this was Doom. There were so many third part mods made, but because of licensing agreement, none of these versions were available for resale. The end user, or you, had to purchase Doom before they could even install the mod. None of these “modders” were allowed to make any money off their creation.
Static variables in Python are created as part of the class declaration. By contrast, instance variables are created as part of a regular method and not a classmethod or staticmethod.
class A:
i=3 # static variable
def dosomethingregularmethod(self):
self.k=4 # instance variable
# to access static variables
A.i
It is rather unfortunate that in the ever changing and rapidly improving world of technology, we hardly remember the geniuses who through their inventions laid the foundation for many of the conveniences and features we now enjoy in our favorite communication devices.
This article is a tribute to the ten people who made these discoveries and an attempt to bring their achievements into the limelight.
1. Marty Cooper
Did you know that Cooper was the first to file the patent in 1973, when he was already working for Motorola for the “radio telephone system”. The Cooper’s Law is his brainchild and to think that he himself was inspired to come out with the patent was Star Trek and its Captain Kirk is indeed revealing.
2. Mike Lazardidis
Checking to see if a directory exists and then creating it if it is not present requires a few lines of code. Isn't Python great. 
Begin by importing the os module and use the exists and makedirs functions.
import os
if os.path.exists(somedirectory):
os.makedirs(somedirectory)
Tech Life in Maryland
| Company Name | City | Industry | Secondary Industry |
|---|---|---|---|
| McCormick and Company, Incorporated | Sparks | Wholesale and Distribution | Grocery and Food Wholesalers |
| USEC Inc. | Bethesda | Manufacturing | Manufacturing Other |
| Coventry Health Care, Inc. | Bethesda | Healthcare, Pharmaceuticals and Biotech | Healthcare, Pharmaceuticals, and Biotech Other |
| Host Hotels and Resorts, Inc. | Bethesda | Travel, Recreation and Leisure | Hotels, Motels and Lodging |
| W.R. Grace and Co. | Columbia | Agriculture and Mining | Farming and Ranching |
| Discovery Communications, Inc. | Silver Spring | Media and Entertainment | Radio and Television Broadcasting |
| Legg Mason, Inc. | Baltimore | Financial Services | Financial Services Other |
| Marriott International Inc. | Bethesda | Travel, Recreation and Leisure | Hotels, Motels and Lodging |
| Constellation Energy Resources, LLC | Baltimore | Energy and Utilities | Gas and Electric Utilities |
| Lockheed Martin Corporation | Bethesda | Manufacturing | Aerospace and Defense |
| T. Rowe Price | Baltimore | Financial Services | Investment Banking and Venture Capital |
training details locations, tags and why hsg
The Hartmann Software Group understands these issues and addresses them and others during any training engagement. Although no IT educational institution can guarantee career or application development success, HSG can get you closer to your goals at a far faster rate than self paced learning and, arguably, than the competition. Here are the reasons why we are so successful at teaching:
- Learn from the experts.
- We have provided software development and other IT related training to many major corporations in Maryland since 2002.
- Our educators have years of consulting and training experience; moreover, we require each trainer to have cross-discipline expertise i.e. be Java and .NET experts so that you get a broad understanding of how industry wide experts work and think.
- Discover tips and tricks about Design Patterns programming
- Get your questions answered by easy to follow, organized Design Patterns experts
- Get up to speed with vital Design Patterns programming tools
- Save on travel expenses by learning right from your desk or home office. Enroll in an online instructor led class. Nearly all of our classes are offered in this way.
- Prepare to hit the ground running for a new job or a new position
- See the big picture and have the instructor fill in the gaps
- We teach with sophisticated learning tools and provide excellent supporting course material
- Books and course material are provided in advance
- Get a book of your choice from the HSG Store as a gift from us when you register for a class
- Gain a lot of practical skills in a short amount of time
- We teach what we know…software
- We care…
Interesting Reads Take a class with us and receive a book of your choosing for 50% off MSRP.
