This is episode 55, on the Interface Segregation principle, or ISP. ISP is the I in the SOLID Principles of object-oriented design.

Kendra Havens of Microsoft shares her favorite tip for mapping a common activity to a custom keyboard shortcut in Visual Studio.

This is episode 53, on the Liskov Substitution principle. The typical definition used today is that subtypes should always be substitutable for their base types. If this isn't the case, it likely means you have the wrong inheritance relationship, or your interface isn't cohesive enough, or there is some other code smell you should consider addressing through refactoring.

This week's tip is on how to be more productive by reducing feedback loops with continuous testing. Our guest is Al Rodriguez. Al is a multiclassing wizard spending most of his time using .NET wherever possible but levels up in other tools to get the job done.

This is episode 51, on the Open/Closed principle.

I'm glad to have a new guest offering some tips. Corey Weathers of [Twilio](https://twilio.com/) is going to offer his perspective on the importance of software testing. Corey loves .NET and has worked for companies including Microsoft and the US federal government before joining Twilio as a developer evangelist. He works to inspire and equip .NET developer, underrepresented developers, and the Twitch community of developers with the tools they need to build the future of communications.

This is episode 49 on the Single Responsibility Principle.

This is episode 48 on Effective Ways to Accelerate Your Career, with guest James Hickey.

This is episode 47, in which we'll introduce the SOLID principles. I'll spend a little time reviewing these principles in the upcoming episodes.

This week's tip comes to us from the UK, where fellow podcast host Jamie Taylor lives. He has a great tip that will help improve your health and productivity.