David,
I think of the "seam" metaphor as "a place where two pieces are loosely stitched together, so we can safely connect different pieces."
But Michael Feathers is more precise:
"A seam is a place where you can alter the behavior in your program without editing in that place."
It gives us a place to break dependencies.
- Jon
'Seam' here refers to a concept popularised by Michael Feathers' book
"Working effectively with legacy code"
There's some good info here:
https://www.informit.com/articles/article.aspx?p=359417&seqNum=3
Fox
---
On Thu, 25 Feb 2021 at 14:28, David Koontz <david@...> wrote:
That example is very helpful - thank you.
I don't know the meaning of "act as our seam"? ?Why do we want/need a seam? ?What is a seam?
Clearly this caveman must get out my stick (ones) and dead snakes (zeros) to play with your example.
