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5aa85be26e
This allows exposing a dict-like interface to python code, allowing
iteration over keys via:
for k in custommapping:
...
while still allowing iteration over pairs, so that you can also
implement 'dict.items()' functionality which returns a pair iterator,
allowing:
for k, v in custommapping.items():
...
example-sequences-and-iterators is updated with a custom class providing
both types of iteration.
65 lines
1.7 KiB
Python
Executable File
65 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python
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from __future__ import print_function
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import sys
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sys.path.append('.')
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from example import Sequence, StringMap
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s = Sequence(5)
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print("s = " + str(s))
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print("len(s) = " + str(len(s)))
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print("s[0], s[3] = %f %f" % (s[0], s[3]))
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print('12.34 in s: ' + str(12.34 in s))
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s[0], s[3] = 12.34, 56.78
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print('12.34 in s: ' + str(12.34 in s))
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print("s[0], s[3] = %f %f" % (s[0], s[3]))
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rev = reversed(s)
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rev2 = s[::-1]
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print("rev[0], rev[1], rev[2], rev[3], rev[4] = %f %f %f %f %f" % (rev[0], rev[1], rev[2], rev[3], rev[4]))
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for i in rev:
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print(i, end=' ')
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print('')
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for i in rev2:
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print(i, end=' ')
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print('')
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print(rev == rev2)
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rev[0::2] = Sequence([2.0, 2.0, 2.0])
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for i in rev:
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print(i, end=' ')
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print('')
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m = StringMap({ 'hi': 'bye', 'black': 'white' })
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print(m['hi'])
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print(len(m))
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print(m['black'])
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try:
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print(m['orange'])
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print('Error: should have thrown exception')
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except KeyError:
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pass
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m['orange'] = 'banana'
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print(m['orange'])
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for k in m:
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print("key = %s, value = %s" % (k, m[k]))
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for k,v in m.items():
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print("item: (%s, %s)" % (k,v))
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from example import ConstructorStats
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cstats = ConstructorStats.get(Sequence)
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print("Instances not destroyed:", cstats.alive())
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s = None
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print("Instances not destroyed:", cstats.alive())
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rev = None
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print("Instances not destroyed:", cstats.alive())
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rev2 = None
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print("Instances not destroyed:", cstats.alive())
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print("Constructor values:", cstats.values())
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print("Default constructions:", cstats.default_constructions)
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print("Copy constructions:", cstats.copy_constructions)
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print("Move constructions:", cstats.move_constructions >= 1)
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print("Copy assignments:", cstats.copy_assignments)
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print("Move assignments:", cstats.move_assignments)
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