Mercurial > hg
view mercurial/thirdparty/attr/converters.py @ 49201:c29e79d11b01 stable
test-dirstate: actually test the append code path in dirstate v2
Apparently it's not sufficient to modify a file to force the dirstate
write-out, so the append code path was untested.
By removing a file instead of changing we're forcing append to happen.
author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
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date | Tue, 17 May 2022 14:59:25 +0100 |
parents | 765eb17a7eb8 |
children | e1c586b9a43c |
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""" Commonly useful converters. """ from __future__ import absolute_import, division, print_function def optional(converter): """ A converter that allows an attribute to be optional. An optional attribute is one which can be set to ``None``. :param callable converter: the converter that is used for non-``None`` values. .. versionadded:: 17.1.0 """ def optional_converter(val): if val is None: return None return converter(val) return optional_converter