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set: Implement __sub__ and __xor__ of set #88

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Merged
merged 2 commits into from
Sep 22, 2019
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set: Implement __sub__ and __xor__ of set #88

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fdd9ec1
set: Implement __sub__ of set
DoDaek Sep 22, 2019
3b404c4
set: Implement __xor__ of set
DoDaek Sep 22, 2019
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set: Implement __xor__ of set
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@DoDaek
DoDaek committed Sep 22, 2019
commit 3b404c485c16f3a5e92beceefc7d4cd10676ac90
20 changes: 20 additions & 0 deletions py/set.go
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Original file line number Diff line number Diff line change
Expand Up @@ -159,6 +159,26 @@ func (s *Set) M__sub__(other Object) (Object, error) {
return ret, nil
}

func (s *Set) M__xor__(other Object) (Object, error) {
ret := NewSet()
b, ok := other.(*Set)
if !ok {
return nil, ExceptionNewf(TypeError, "unsupported operand type(s) for &: '%s' and '%s'", s.Type().Name, other.Type().Name)
}
for j := range s.items {
ret.items[j] = SetValue{}
}
for i := range b.items {
_, ok := s.items[i]
if ok {
delete(ret.items, i)
} else {
ret.items[i] = SetValue{}
}
}
return ret, nil
}

// Check interface is satisfied
var _ I__len__ = (*Set)(nil)
var _ I__bool__ = (*Set)(nil)
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13 changes: 13 additions & 0 deletions py/tests/set.py
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Expand Up @@ -45,4 +45,17 @@
assert 4 in d
assert 5 in d

doc="__xor__"
a = {1, 2, 3}
b = {2, 3, 4, 5}
c = a.__xor__(b)
assert 1 in c
assert 4 in c
assert 5 in c

d = a ^ b
assert 1 in c
assert 4 in c
assert 5 in c

doc="finished"