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hashset.go
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hashset.go
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package hashset
type Int64Set map[int64]struct{}
// NewInt64 returns an empty int64 set
func NewInt64() Int64Set {
return make(map[int64]struct{})
}
// NewInt64WithSize returns an empty int64 set initialized with specific size
func NewInt64WithSize(size int) Int64Set {
return make(map[int64]struct{}, size)
}
// Add adds the specified element to this set
// Always returns true due to the build-in map doesnt indicate caller whether the given element already exists
// Reserves the return type for future extension
func (s Int64Set) Add(value int64) bool {
s[value] = struct{}{}
return true
}
// Contains returns true if this set contains the specified element
func (s Int64Set) Contains(value int64) bool {
if _, ok := s[value]; ok {
return true
}
return false
}
// Remove removes the specified element from this set
// Always returns true due to the build-in map doesnt indicate caller whether the given element already exists
// Reserves the return type for future extension
func (s Int64Set) Remove(value int64) bool {
delete(s, value)
return true
}
// Range calls f sequentially for each value present in the hashset.
// If f returns false, range stops the iteration.
func (s Int64Set) Range(f func(value int64) bool) {
for k := range s {
if !f(k) {
break
}
}
}
// Len eturns the number of elements of this set
func (s Int64Set) Len() int {
return len(s)
}