https://bugs.documentfoundation.org/show_bug.cgi?id=151426
Bug ID: 151426
Summary: Feature request: extend IFERROR/IFNA to other
predicates
Product: LibreOffice
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: enhancement
Priority: medium
Component: Calc
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: obscur...@gmail.com
Description:
One great feature of LibreOffice over OpenOffice is the existence of IFERROR
and ISNA.
The documentation notes: `=IFERROR(X; Y)` is semantically equivalent to
`=IF(ISERROR(X); Y; X)`, except that the former case is more efficient because
`X` is only computed once.
This is an extremely common use pattern that is not limited to errors - it's
providing a default value when the result doesn't fit an expected type.
I have personal use cases for the equivalent of IFBLANK, IFNONTEXT,
IFNONNUMBER, and these shouldn't be too difficult to implement, giving a real
performance (and readability) benefit.
In a different direction, the complete generalization is validate-or-default,
which takes three arguments:
`VALIDATE(PRED, X, Y) === IF(PRED(X),X,Y)`
which guarantees X is evaluated once. This would subsume all of the above and
then some, provided function references exist.
Actual Results:
Expected Results:
Reproducible: Always
User Profile Reset: No
Additional Info:
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