# ref_impl_eiffel [80] Further corrections to date/time library routine naming (is_valid_xxx becomes valid_xxx). **Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161) **Created:** 2006-06-27 01:09 UTC **Views:** 4 **Replies:** 0 **URL:** https://discourse.openehr.org/t/ref-impl-eiffel-80-further-corrections-to-date-time-library-routine-naming-is-valid-xxx-becomes-valid-xxx/12106 --- ## Post #1 by @svn1 Revision: 80 Author: thomas\.beale Log Message: --- **Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-80-further-corrections-to-date-time-library-routine-naming-is-valid-xxx-becomes-valid-xxx/12106 **Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-80-further-corrections-to-date-time-library-routine-naming-is-valid-xxx-becomes-valid-xxx/12106