#19208: Replace remaining instances of has_coerce_map_from_[c_]impl by
_coerce_map_from_
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Reporter: pbruin | Owner:
Type: task | Status: new
Priority: minor | Milestone: sage-6.9
Component: coercion | Keywords:
Merged in: | Authors: Peter Bruin
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The two remaining occurrences of the old-style
`has_coerce_map_from_[c_]impl` should be replaced by
`_coerce_map_from_()`. In addition, `Singular._coerce_map_from_()` now
returns `None` if no coercion map is known (instead of returning `False`
or raising a `NotImplementedError`).
After this ticket, the only occurrences of
`[has_]coerce_map_from_[c_]impl` are in the module
`sage.structure.parent_old`.
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Ticket URL: <http://trac.sagemath.org/ticket/19208>
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