Course: C# in Depth: Puzzles, Gotchas, Questions at Interviews

C# in Depth: Puzzles, Gotchas, Questions at Interviews

  • Life Time Access
  • Certificate on Completion
  • Access on Android and iOS App
About this Course

This is an advanced C# course.

Build a solid foundation in C# learning odd cases related to how the language is designed

This course contains mostly practical puzzles learning which you get a better C# developer. You can find out on the Internet tons of impractical puzzles which don’t make you a better C# developer. This is not about this course. Yes, of course, even impractical puzzles sometimes are helpful especially if you’re preparing for a C# interview. However, I bet on puzzles which teach you the thing you absolutely need to understand. Indeed, this course deepens your understanding of C#. Apart from that, you’ll learn some very important things like the problem of types substitution. You’ll learn about the fundamental problems related to processing date and time values. Believe me, you’ll be astonished!

This course is built in a manner of a game. I’ll show you code examples in Visual Studio and ask to answer the question related to that code example. You’ll have some time to come up with your own answer and after that we continue. Puzzles, gotchas and cautionary tales are presented here to frighten and inspire you! Regardless of your current skills, you’ll remember things you’ve forgotten, learn things you didn’t know and become a more robust programmer.

So, this course is "must see" for anyone who wants to improve his knowledge of C#.

Here is my Teaching Approach

No fluff, no ranting, no beating the air. I esteem your time. The course material is succinct, yet comprehensive. All important concepts are covered. Particularly important topics are covered in-depth. For absolute beginners, I offer my help on Skype absolutely free, if requested.

Take this course, and you will be satisfied.

Content and Overview

This course is aimed at all kind of developers. It provides solid theoretical base reinforced by the practical material.

In short, this advanced C# course covers the following topics:

  • The evilness of the mutable structures. You’ll see several examples when mutable structures demonstrate the unexpected behavior.
  • Generics and arrays including specializations, constraints on generics, variance and covariance, Liskov substitution principle and more
  • The pitfalls in arithmetic: how floating-point numbers are implemented, how to compare them, how arithmetic overflow behaves with different types, how rounding works, the difference between decimal and money
  • Collections and LINQ: how to alter an existing list, the deferred execution of LINQ expressions, the peculiarities of closures within for and foreach loops, list conversion
  • Methods and Overloading: overloading base methods, method hiding, when to prefer property over method; the reasons on why to avoid optional parameters, implementing abstract classes
  • Date and Time puzzles: concepts related to dates and times including how a computer stores time, UTC and GMT, time zones, global and local perspectives; time-zone related puzzles, roundtrips, arithmetic on dates, how to calculate the age.
  • FAQ at C# Interviews: abstract classes versus interfaces, how to implement the Dispose pattern, what is the difference between encapsulation and information hiding, encapsulation in practice, strings interning, constant versus read-only fields, lock versus monitor, how to rethrow exceptions, when to use StringBuilder instead of string
  • And yet a short section of miscellaneous puzzles Enroll and start an exciting journey learning C# puzzles!

Who is the target audience?

  • Anyone who wants to improve his C#
  • Anyone who wants to prepare for a C# interview
Basic knowledge
  • At least basic understanding of C#
What you will learn
  • Write code with more confidence
  • Avoid Date and Time Pitfalls
  • Avoid LSP Violations
  • Write more robust code
  • Pass C# Interview
  • Understand how C# arithmetic works
Lectures quantity: 55
Common duration: 04:28:46
Evil Structures
  • How to Ask Questions  
  • Download Sources  
  • Evil Structures - Outline  
  • Mutating Through Readonly Fields  
  • Mutating Through Arrays  
  • Mutating Within Using Block  
  • Evil Structures - Conclusion  
Generics, Arrays, LSP and Variance
  • Outline  
  • Specializations  
  • Constraints  
  • Variance with Arrays and Generics  
  • Liskov Substitution Principle  
  • LSP Violation Demo  
  • More on Variance and Covariance  
  • Conclusion  
Math Puzzles
  • Math Puzzles - Outline  
  • Floating Point Numbers  
  • Arithmetic Overflow  
  • Check for Arithmetic Overflow  
  • Rounding Puzzle  
  • Decimal and Money  
  • Math Puzzles - Conclusion  
Collections and LINQ
  • Collections and LINQ - Outline  
  • Altering a List  
  • LINQ. Deferred Execution  
  • LINQ. Closure with For and Foreach  
  • Generics Conversion  
  • Collections and LINQ - Conclusion  
Methods and Overloading
  • Methods and Overloading - Outline  
  • Overloading Base Method  
  • Method Hiding  
  • Property vs Method. Optional Parameters  
  • Implementing Abstract Classes  
  • Methods and Overloading - Conclusion  
DateTime Puzzles
  • Date Time Puzzles - Outline  
  • Concepts. Preparing for Puzzles  
  • General Puzzles  
  • DateTime Roundtrip  
  • Arithmetic on Dates  
  • Calculating Age  
  • Date Time Puzzles - Conclusion  
FAQ at Interviews
  • FAQ - Outline  
  • Abstract Class vs Interface  
  • Implementing "Dispose" Pattern  
  • Encapsulation and Information Hiding  
  • Encapsulation in Practice  
  • What is Interning?  
  • Constant vs Readonly  
  • Lock vs Monitor  
  • How to Rethrow Exceptions  
  • StringBuilder vs String  
  • FAQ - Conclusion  
Miscellaneous Puzzles
  • Weird Nullable Comparisons  
  • Out Arguments  
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