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33 lines
940 B
Nim
33 lines
940 B
Nim
#
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#
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# The Nim Compiler
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# (c) Copyright 2020 Nim Contributors
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module adds functionality to the built-in `set` type.
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## See also std/packedsets, std/sets
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import typetraits
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#[
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type SetElement* = char|byte|bool|int16|uint16|enum|uint8|int8
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## The allowed types of a built-in set.
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]#
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template toSet*(iter: untyped): untyped =
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## Return a built-in set from the elements of iterable `iter`
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runnableExamples:
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assert "helloWorld".toSet == {'W', 'd', 'e', 'h', 'l', 'o', 'r'}
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assert toSet([10u16, 20, 30]) == {10u16, 20, 30}
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assert [30u8, 100, 10].toSet == {10u8, 30, 100}
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assert toSet(@[1321i16, 321, 90]) == {90i16, 321, 1321}
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assert toSet([false]) == {false}
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assert toSet(0u8..10) == {0u8..10}
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var result: set[elementType(iter)]
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for x in iter:
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incl(result, x)
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result
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