November 2017
Intermediate to advanced
670 pages
17h 35m
English
Content preview from Learning Functional Programming in Go
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Functional composition in the context of a legal obligation
Assume that Larry agreed to pay Lucy $5,000 by 1st October and that date has passed. Lucy wants to get paid $5,000 and Larry wants to pay her, but he does not have the money.
Should Lucy sue Larry to get him to pay?
The following category diagram describes their situation:
The category states are as follows:
- A = Where we are today (12th October)
- B = Lucy demands a lawsuit
- C = Lucy gets paid
The category morphisms are as follows:
- f = Legal expense (for both, $2,000+)
- g = Larry pays Lucy $5,000
- h = Larry pays Lucy $5,000