Why study functional programming? (2012)

Re:Why study functional programming? (2012) by agalunar on Tuesday August 02, 2022 @09:41PM (#32326661)

> If a piece of code B loads the contents of memory where a piece of code A writes that's before B, then you can never execute B before or in parallel with A.

This is a description of what a data dependency is; I'm still not sure what your point is regarding mutable data structures specifically.

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Re:Why study functional programming? (2012) by kephasp on Tuesday August 02, 2022 @09:55PM (#32326736)

A mutable data structure will have such data dependencies all around. An immutable data structure cannot, because it will never be written in after creation.

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Re:Why study functional programming? (2012) by agalunar on Tuesday August 02, 2022 @10:12PM (#32326839)

But an immutable data structure will cause data dependencies – the only way it couldn't cause a data dependency would be if it was never read.

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Re:Why study functional programming? (2012) by kephasp on Wednesday August 03, 2022 @02:27PM (#32335215)

But once it is created, all pieces of code accessing it can be executed in any order because there will never be a write on it again.

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