In SOLID, what is the distinction between SRP and ISP? (Single Responsibility Principle and Interface Segregation Principle)

Question

How does the SOLID \"Interface Segregation Principle\" differ from \"Single Responsibility Principle\"?

The Wikipedia entry for SOLID says that

IS

Answer 1

Robert Martin tweeted the following on May 16, 2018.

ISP can be seen as similar to SRP for interfaces; but it is more than that. ISP generalizes into: “Don’t depend on more than you need.” SRP generalizes to “Gather together things that change for the same reasons and at the same times.”

Imagine a stack class with both push and pop. Imagine a client that only pushes. If that client depends upon the stack interface, it depends upon pop, which it does not need. SRP would not separate push from pop; ISP would.