Talk:Flow-sensitive typing

This article is within the scope of WikiProject Computer science, a collaborative effort to improve the coverage of Computer science related articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Computer scienceWikipedia:WikiProject Computer scienceTemplate:WikiProject Computer scienceComputer science articles

???

This article has not yet received a rating on the project's importance scale.

Things you can help WikiProject Computer science with:

Here are some tasks awaiting attention:

Article requests :
- Requested articles/Applied arts and sciences/Computer science, computing, and Internet
Cleanup :
- Computer science articles needing attention
- Computer science articles needing expert attention
Copyedit :
- Computing
Expand :
- Computer science
Infobox :
- Computer science articles without infoboxes
Maintain :
- Timeline of computing 2020–present
Photo :
- Find pictures for the biographies of computer scientists (see List of computer scientists)
- Computing articles needing images
Stubs :
- Computer science stubs
Unreferenced :
- WikiProject Computer science/Unreferenced BLPs
Project-related :
- Tag all relevant articles in Category:Computer science and sub-categories with {{WikiProject Computer science}}

Flow typing in Fortran ?[edit]

It's stated that Whiley was the first language to implement flow typing, but as I understand the concept, it already appears in Fortran 2003's SELECT TYPE statement.

90.56.70.138 (talk) 10:25, 13 December 2018 (UTC)[reply]

My impression is also that the idea is not novel: it appears as Deline et al. TypeState for Objects (ECOOP 2004 at https://www.cs.cmu.edu/~aldrich/courses/819/deline-typestates.pdf) where for example, the type is Object, and the finite-state-machine transition is the instanceOf primitive. This originally was seen in Cecil (Chambers, UWashington, 1992) for optional type-checking/guarding of multimethod dispatch. — Preceding unsigned comment added by 69.11.76.63 (talk) 23:54, 16 March 2019 (UTC)[reply]

Also see occurrence typing from The Design and Implementation of Typed Scheme (POPL 2008), https://www2.ccs.neu.edu/racket/pubs/popl08-thf.pdf Erik Silkensen 07:32, 21 August 2019 (UTC) — Preceding unsigned comment added by Eriksilkensen (talk • contribs)