O'Reilly logo

Exercises in Programming Style by Cristina Videira Lopes

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 9

The One

image

9.1 Constraints

  • Existence of an abstraction to which values can be converted.
  • This abstraction provides operations to (1) wrap around values, so that they become the abstraction; (2) bind itself to functions, so to establish sequences of functions; and (3) unwrap the value, so to examine the final result.
  • Larger problem is solved as a pipeline of functions bound together, with unwrapping happening at the end.
  • Particularly for The One style, the bind operation simply calls the given function, giving it the value that it holds, and holds on to the returned value.

9.2 A Program in this Style

  1 #!/usr/bin/env python
  2 import ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required