It’s been said that structured programming is programming without GOTO, and functional programming is programming without assignment statements. Is declarative programming then programming without the concept of linear time?

▲ itishappy 10 hours ago | parent | next [-]

I would argue that imperative programming is the only one with a concept of linear time.

Here's a functional example:

    map (*3) [0,1,2,3,4,5,6,7,8,9]

Are those multiplications run in sequence or parallel?

Here's a fancier functional one:

    getUser = User <$> getName <*> getEmail <*> getStartDate

What order are the fields fetched?

If you answered "unspecified" then you're right! A compiler could parallelize either of these expressions!

▲ Akronymus 16 hours ago | parent | prev [-]

I thought fp was more avoiding mutability/reassigning values to identifiers

What you wrote makes me think more of the point free style

	▲	rhsjie294nd 2 hours ago \| parent [-]
		When hearing of assignment statements, I think of mutability. Point free makes me think of (low to) no variables, rather than no assignments