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Documentation
¶
Overview ¶
Package treemap implements a map backed by red-black tree.
Elements are ordered by key in the map.
Structure is not thread safe.
Index ¶
- type Iterator
- func (iterator *Iterator) Begin()
- func (iterator *Iterator) End()
- func (iterator *Iterator) First() bool
- func (iterator *Iterator) Key() interface{}
- func (iterator *Iterator) Last() bool
- func (iterator *Iterator) Next() bool
- func (iterator *Iterator) Prev() bool
- func (iterator *Iterator) Value() interface{}
- type Map
- func (m *Map) All(f func(key interface{}, value interface{}) bool) bool
- func (m *Map) Any(f func(key interface{}, value interface{}) bool) bool
- func (m *Map) Clear()
- func (m *Map) Each(f func(key interface{}, value interface{}))
- func (m *Map) Empty() bool
- func (m *Map) Find(f func(key interface{}, value interface{}) bool) (interface{}, interface{})
- func (m *Map) FromJSON(data []byte) error
- func (m *Map) Get(key interface{}) (value interface{}, found bool)
- func (m *Map) Iterator() Iterator
- func (m *Map) Keys() []interface{}
- func (m *Map) Map(f func(key1 interface{}, value1 interface{}) (interface{}, interface{})) *Map
- func (m *Map) Max() (key interface{}, value interface{})
- func (m *Map) Min() (key interface{}, value interface{})
- func (m *Map) Put(key interface{}, value interface{})
- func (m *Map) Remove(key interface{})
- func (m *Map) Select(f func(key interface{}, value interface{}) bool) *Map
- func (m *Map) Size() int
- func (m *Map) String() string
- func (m *Map) ToJSON() ([]byte, error)
- func (m *Map) Values() []interface{}
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Iterator ¶
type Iterator struct {
// contains filtered or unexported fields
}
Iterator holding the iterator's state
func (*Iterator) Begin ¶ added in v1.2.0
func (iterator *Iterator) Begin()
Begin resets the iterator to its initial state (one-before-first) Call Next() to fetch the first element if any.
func (*Iterator) End ¶ added in v1.2.0
func (iterator *Iterator) End()
End moves the iterator past the last element (one-past-the-end). Call Prev() to fetch the last element if any.
func (*Iterator) First ¶ added in v1.2.0
First moves the iterator to the first element and returns true if there was a first element in the container. If First() returns true, then first element's key and value can be retrieved by Key() and Value(). Modifies the state of the iterator
func (*Iterator) Key ¶
func (iterator *Iterator) Key() interface{}
Key returns the current element's key. Does not modify the state of the iterator.
func (*Iterator) Last ¶ added in v1.2.0
Last moves the iterator to the last element and returns true if there was a last element in the container. If Last() returns true, then last element's key and value can be retrieved by Key() and Value(). Modifies the state of the iterator.
func (*Iterator) Next ¶
Next moves the iterator to the next element and returns true if there was a next element in the container. If Next() returns true, then next element's key and value can be retrieved by Key() and Value(). If Next() was called for the first time, then it will point the iterator to the first element if it exists. Modifies the state of the iterator.
type Map ¶
type Map struct {
// contains filtered or unexported fields
}
Map holds the elements in a red-black tree
func NewWith ¶
func NewWith(comparator utils.Comparator) *Map
NewWith instantiates a tree map with the custom comparator.
func NewWithIntComparator ¶
func NewWithIntComparator() *Map
NewWithIntComparator instantiates a tree map with the IntComparator, i.e. keys are of type int.
func NewWithStringComparator ¶
func NewWithStringComparator() *Map
NewWithStringComparator instantiates a tree map with the StringComparator, i.e. keys are of type string.
func (*Map) All ¶
All passes each element of the container to the given function and returns true if the function returns true for all elements.
func (*Map) Any ¶
Any passes each element of the container to the given function and returns true if the function ever returns true for any element.
func (*Map) Each ¶
func (m *Map) Each(f func(key interface{}, value interface{}))
Each calls the given function once for each element, passing that element's key and value.
func (*Map) Find ¶
Find passes each element of the container to the given function and returns the first (key,value) for which the function is true or nil,nil otherwise if no element matches the criteria.
func (*Map) FromJSON ¶ added in v1.9.0
FromJSON populates the map from the input JSON representation.
func (*Map) Get ¶
Get searches the element in the map by key and returns its value or nil if key is not found in tree. Second return parameter is true if key was found, otherwise false. Key should adhere to the comparator's type assertion, otherwise method panics.
func (*Map) Map ¶
Map invokes the given function once for each element and returns a container containing the values returned by the given function as key/value pairs.
func (*Map) Max ¶
func (m *Map) Max() (key interface{}, value interface{})
Max returns the maximum key and its value from the tree map. Returns nil, nil if map is empty.
func (*Map) Min ¶
func (m *Map) Min() (key interface{}, value interface{})
Min returns the minimum key and its value from the tree map. Returns nil, nil if map is empty.
func (*Map) Put ¶
func (m *Map) Put(key interface{}, value interface{})
Put inserts key-value pair into the map. Key should adhere to the comparator's type assertion, otherwise method panics.
func (*Map) Remove ¶
func (m *Map) Remove(key interface{})
Remove removes the element from the map by key. Key should adhere to the comparator's type assertion, otherwise method panics.
func (*Map) Select ¶
Select returns a new container containing all elements for which the given function returns a true value.
Source Files