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https://github.com/saitohirga/WSJT-X.git
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59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
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# (C) Copyright David Abrahams 2002. Permission to copy, use, modify, sell and
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# distribute this software is granted provided this copyright notice appears in
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# all copies. This software is provided "as is" without express or implied
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# warranty, and with no claim as to its suitability for any purpose.
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import operator
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from b2.util import is_iterable
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def unique (values, stable=False):
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assert is_iterable(values)
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if stable:
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s = set()
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r = []
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for v in values:
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if not v in s:
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r.append(v)
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s.add(v)
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return r
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else:
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return list(set(values))
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def max_element (elements, ordered = None):
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""" Returns the maximum number in 'elements'. Uses 'ordered' for comparisons,
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or '<' is none is provided.
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"""
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assert is_iterable(elements)
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assert callable(ordered) or ordered is None
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if not ordered: ordered = operator.lt
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max = elements [0]
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for e in elements [1:]:
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if ordered (max, e):
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max = e
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return max
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def select_highest_ranked (elements, ranks):
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""" Returns all of 'elements' for which corresponding element in parallel
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list 'rank' is equal to the maximum value in 'rank'.
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"""
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assert is_iterable(elements)
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assert is_iterable(ranks)
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if not elements:
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return []
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max_rank = max_element (ranks)
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result = []
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while elements:
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if ranks [0] == max_rank:
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result.append (elements [0])
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elements = elements [1:]
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ranks = ranks [1:]
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return result
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