[IMP] expression: added a small comment.
bzr revid: vmt@openerp.com-20110726172853-4yoxl1bdnd1sopvf
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@ -60,7 +60,8 @@ def normalize(domain):
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def combine(operator, unit, zero, domains):
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"""Returns a new domain expression where all domain components from ``domains``
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have been added together using the binary operator ``operator``.
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have been added together using the binary operator ``operator``. The given
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domains must be normalized.
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:param unit: the identity element of the domains "set" with regard to the operation
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performed by ``operator``, i.e the domain component ``i`` which, when
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@ -72,6 +73,7 @@ def combine(operator, unit, zero, domains):
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combined with any domain ``x`` via ``operator``, yields ``z``.
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E.g. [(1,'=',1)] is the typical zero for OR_OPERATOR: as soon as
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you see it in a domain component the resulting domain is the zero.
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:param domains: a list of normalized domains.
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"""
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result = []
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count = 0
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