085. UnALLOCATED variable passed to a procedure is not PRESENT there.

topic: Procedures

Note

This tip is a draft1.

A variable that is not ALLOCATED, when passed as an OPTIONAL, non-allocatable argument to a procedure, is considered not PRESENT there. This Fortran 2008 feature can simplify code.

---

A variable that is not ALLOCATED, when passed as an OPTIONAL, non-allocatable argument to a procedure, is considered not PRESENT there. This Fortran 2008 feature can simplify code. https://t.co/TdSd5Jv0Pt

— FortranTip (@fortrantip) January 10, 2022

---

1

From the perspective of FortranTip Browser, “draft” means that it hasn’t been edited for formatting, hasn’t had corresponding Fortran programs added, the text content hasn’t been enhanced, etc. Draft texts are extracted from the corresponding Tweet using the Twitter API.