We have been discussing all the issues with legacy code. Now it is time to tackle solving those issues. The first thing we must do is bring sanity to the targeted legacy code, and then we can begin testing and eventually fix the code and bring it back from death.
Dealing with legacy problems
by Rod Stephens, Clayton Hunt, John Callaway, Ovais Mehboob Ahmed Khan
Improving your C# Skills
- Title Page
- Copyright and Credits
- About Packt
- Contributors
- Preface
- What's New in .NET Core 2 and C# 7?
- Understanding .NET Core Internals and Measuring Performance
- Multithreading and Asynchronous Programming in .NET Core
- Securing and Implementing Resilience in .NET Core Applications
- Introduction to resilient applications
- Storing sensitive information using Application Secrets
- Protecting ASP.NET Core APIs
- SSL (Secure Socket Layer)
- Preventing CSRF (Cross-Site Request Forgery) attacks
- Reinforcing security headers
- Adding the HTTP strict transport security header
- Authentication and authorization
- Authentication
- Authorization
- Implementing authentication and authorization using the ASP.NET Core Identity framework
- Summary
- Why TDD is Important
- First, a little background
- So, what is TDD?
- An approach to TDD 
- Arguments against TDD
- Arguments in favor of TDD
- Different types of test
- Why does it matter?
- Summary
- Setting Up the .NET Test Environment
- Setting Up a JavaScript Environment
- What to Know Before Getting Started
- Tabula Rasa – Approaching an Application with TDD in Mind
- Testing JavaScript Applications
- Exploring Integrations
- Changes in Requirements
- The Legacy Problem
- Unraveling a Mess
- Geometry
- Problems
- 1. Monte Carlo π
- 2. Newton's π
- 3. Bisection root-finding
- 4. Newton's method
- 5. Gaussian elimination
- 6. Monte Carlo integration
- 7. Rectangle rule integration
- 8. Trapezoid rule integration
- 9. Arrowheads
- 10. Line-line intersection
- 11. Point-line distance
- 12. Point-segment distance
- 13. Segment-segment distance
- 14. Circle selection
- 15. Line-circle intersection
- 16. Circle-circle intersection
- 17. Circle-line tangents
- 18. Polygon area
- 19. Point in a polygon
- 20. Convexity testing
- 21. Stars
- Solutions
- 1. Monte Carlo π
- 2. Newton's π
- 3. Bisection root-finding
- 4. Newton's method
- 5. Gaussian elimination
- 6. Monte Carlo integration
- 7. Rectangle rule integration
- 8. Trapezoid rule integration
- 9. Arrowheads
- 10. Line-line intersection
- 11. Point-line distance
- 12. Point-segment distance
- 13. Segment-segment distance
- 14. Circle selection
- 15. Line-circle intersection
- 16. Circle-circle intersection
- 17. Circle-line tangents
- 18. Polygon area
- 19. Point in a polygon
- 20. Convexity testing
- 21. Stars
- Summary
- Problems
- Randomization
- Files and Directories
- Advanced C# and .NET Features
- Cryptography
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Dealing with legacy problems
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