/usr/share/boost-build/util/set.py is in libboost1.55-tools-dev 1.55.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | # (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
# distribute this software is granted provided this copyright notice appears in
# all copies. This software is provided "as is" without express or implied
# warranty, and with no claim as to its suitability for any purpose.
from utility import to_seq
def difference (b, a):
""" Returns the elements of B that are not in A.
"""
result = []
for element in b:
if not element in a:
result.append (element)
return result
def intersection (set1, set2):
""" Removes from set1 any items which don't appear in set2 and returns the result.
"""
result = []
for v in set1:
if v in set2:
result.append (v)
return result
def contains (small, large):
""" Returns true iff all elements of 'small' exist in 'large'.
"""
small = to_seq (small)
large = to_seq (large)
for s in small:
if not s in large:
return False
return True
def equal (a, b):
""" Returns True iff 'a' contains the same elements as 'b', irrespective of their order.
# TODO: Python 2.4 has a proper set class.
"""
return contains (a, b) and contains (b, a)
|