# ref_impl_eiffel [114] Remove use of leading 'T' in ISO8601 date/time constraint patterns; allow on read, but remove on write.

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2006-09-25 16:28 UTC
**Views:** 2
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-114-remove-use-of-leading-t-in-iso8601-date-time-constraint-patterns-allow-on-read-but-remove-on-write/12162

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## Post #1 by @svn1

Revision: 114
Author:   thomas\.beale

Log Message:

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**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-114-remove-use-of-leading-t-in-iso8601-date-time-constraint-patterns-allow-on-read-but-remove-on-write/12162
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-114-remove-use-of-leading-t-in-iso8601-date-time-constraint-patterns-allow-on-read-but-remove-on-write/12162