13 lines
145 B
Python
13 lines
145 B
Python
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let d = {1: 2, 3: 4, 5: 6}
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print(len(d))
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del d[3]
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print(len(d))
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let s = {1,2,3}
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print(len(s))
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s.remove(2)
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print(len(s))
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s.add(2)
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print(len(s))
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