diff --git a/.idea/discord.xml b/.idea/discord.xml
new file mode 100644
index 0000000..30bab2a
--- /dev/null
+++ b/.idea/discord.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="ASK" />
+    <option name="description" value="" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/go-extypes.iml b/.idea/go-extypes.iml
new file mode 100644
index 0000000..c956989
--- /dev/null
+++ b/.idea/go-extypes.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..967f534
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,14 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoredPackages">
+        <value>
+          <list size="1">
+            <item index="0" class="java.lang.String" itemvalue="mysql-connector-python" />
+          </list>
+        </value>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..417315f
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/go-extypes.iml" filepath="$PROJECT_DIR$/.idea/go-extypes.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..1c06bd7
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;go.import.settings.migrated&quot;: &quot;true&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;preferences.pluginManager&quot;
+  }
+}</component>
+</project>
\ No newline at end of file
diff --git a/map.go b/map.go
new file mode 100644
index 0000000..0509887
--- /dev/null
+++ b/map.go
@@ -0,0 +1,46 @@
+package laniakea
+
+type HashMap[K comparable, V any] map[K]V
+
+func NewMapFrom[K comparable, V any](m map[K]V) HashMap[K, V] {
+	out := make(HashMap[K, V])
+	for k, v := range m {
+		out[k] = v
+	}
+	return out
+}
+func (m HashMap[K, V]) Len() int {
+	return len(m)
+}
+func (m HashMap[K, V]) Add(key K, val V) HashMap[K, V] {
+	m[key] = val
+	return m
+}
+func (m HashMap[K, V]) Remove(key K) HashMap[K, V] {
+	delete(m, key)
+	return m
+}
+func (m HashMap[K, V]) Get(key K) V {
+	return m[key]
+}
+func (m HashMap[K, V]) GetOrDefault(key K, def V) V {
+	v, ok := m[key]
+	if !ok {
+		return def
+	}
+	return v
+}
+func (m HashMap[K, V]) Contains(key K) bool {
+	_, ok := m[key]
+	return ok
+}
+func (m HashMap[K, V]) Filter(f func(K, V) bool) HashMap[K, V] {
+	out := make(HashMap[K, V])
+	for k, v := range m {
+		if !f(k, v) {
+			continue
+		}
+		out[k] = v
+	}
+	return out
+}
diff --git a/queue.go b/queue.go
new file mode 100644
index 0000000..d319ce7
--- /dev/null
+++ b/queue.go
@@ -0,0 +1,71 @@
+package laniakea
+
+import (
+	"errors"
+	"sync"
+)
+
+var QueueFullErr = errors.New("queue full")
+
+type Queue[T any] struct {
+	size  uint64
+	mu    sync.RWMutex
+	queue []T
+}
+
+func CreateQueue[T any](size uint64) *Queue[T] {
+	return &Queue[T]{
+		queue: make([]T, 0),
+		size:  size,
+	}
+}
+
+func (q *Queue[T]) Enqueue(el T) error {
+	if q.IsFull() {
+		return QueueFullErr
+	}
+	q.queue = append(q.queue, el)
+	return nil
+}
+
+func (q *Queue[T]) Peak() T {
+	q.mu.RLock()
+	defer q.mu.RUnlock()
+	return q.queue[0]
+}
+
+func (q *Queue[T]) IsEmpty() bool {
+	return q.Length() == 0
+}
+
+func (q *Queue[T]) IsFull() bool {
+	return q.Length() == q.size
+}
+
+func (q *Queue[T]) Length() uint64 {
+	q.mu.RLock()
+	defer q.mu.RUnlock()
+	return uint64(len(q.queue))
+}
+
+func (q *Queue[T]) Dequeue() T {
+	q.mu.RLock()
+	el := q.queue[0]
+	q.mu.RUnlock()
+
+	if q.Length() == 1 {
+		q.mu.Lock()
+		q.queue = make([]T, 0)
+		q.mu.Unlock()
+		return el
+	}
+
+	q.mu.Lock()
+	q.queue = q.queue[1:]
+	q.mu.Unlock()
+	return el
+}
+
+func (q *Queue[T]) Raw() []T {
+	return q.queue
+}
diff --git a/slice.go b/slice.go
new file mode 100644
index 0000000..aa88a57
--- /dev/null
+++ b/slice.go
@@ -0,0 +1,176 @@
+package laniakea
+
+import "slices"
+
+type Slice[T comparable] []T
+
+func NewSliceFrom[T comparable](slice []T) Slice[T] {
+	s := make(Slice[T], len(slice))
+	copy(s, slice)
+	return s
+}
+func (s Slice[T]) Len() int {
+	return len(s)
+}
+func (s Slice[T]) Cap() int {
+	return cap(s)
+}
+func (s Slice[T]) Get(index int) T {
+	return s[index]
+}
+func (s Slice[T]) Last() T {
+	return s.Get(s.Len() - 1)
+}
+func (s Slice[T]) Index(el T) int {
+	return slices.Index(s, el)
+}
+
+// Swap is mutable func
+func (s Slice[T]) Swap(i, j int) Slice[T] {
+	s[i], s[j] = s[j], s[i]
+	return s
+}
+func (s Slice[T]) Filter(f func(e T) bool) Slice[T] {
+	out := make(Slice[T], 0)
+	for _, v := range s {
+		if f(v) {
+			out = append(out, v)
+		}
+	}
+	return out
+}
+func (s Slice[T]) Map(f func(e T) T) Slice[T] {
+	out := make(Slice[T], s.Len())
+	for i, v := range s {
+		out[i] = f(v)
+	}
+	return out
+}
+func (s Slice[T]) Pop(index int) Slice[T] {
+	if index == 0 {
+		return s[1:]
+	}
+	out := make(Slice[T], s.Len()-index)
+	for i, e := range s {
+		if i == index {
+			continue
+		}
+		out[i] = e
+	}
+	return out
+}
+func (s Slice[T]) Remove(el T) Slice[T] {
+	index := s.Index(el)
+	if index == -1 {
+		return s
+	}
+	return s.Pop(index)
+}
+func (s Slice[T]) Push(e T) Slice[T] {
+	return append(s, e)
+}
+
+func (s Slice[T]) ToArray() []T {
+	out := make([]T, len(s))
+	copy(out, s)
+	return out
+}
+func (s Slice[T]) ToAnyArray() []any {
+	out := make([]any, len(s))
+	for i, v := range s {
+		out[i] = v
+	}
+	return out
+}
+
+// ForEach is mutable func
+func (s Slice[T]) ForEach(f func(e T) T) Slice[T] {
+	for i, v := range s {
+		s[i] = f(v)
+	}
+	return s
+}
+
+type Set[T comparable] []T
+
+func NewSetFrom[T comparable](slice []T) Set[T] {
+	s := make(Set[T], 0)
+	for _, v := range slice {
+		if s.Index(v) >= 0 {
+			continue
+		}
+		s = append(s, v)
+	}
+	return s
+}
+func (s Set[T]) Len() int {
+	return len(s)
+}
+func (s Set[T]) Cap() int {
+	return cap(s)
+}
+func (s Set[T]) Get(index int) T {
+	return s[index]
+}
+func (s Set[T]) Last() T {
+	return s[s.Len()-1]
+}
+func (s Set[T]) Index(el T) int {
+	return slices.Index(s, el)
+}
+func (s Set[T]) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+func (s Set[T]) Add(v T) Set[T] {
+	index := s.Index(v)
+	if index >= 0 {
+		return s
+	}
+	return append(s, v)
+}
+func (s Set[T]) Pop(index int) Set[T] {
+	if index == 0 {
+		return s[1:]
+	}
+	out := make(Set[T], s.Len()-index)
+	for i, e := range s {
+		if i == index {
+			continue
+		}
+		out[i] = e
+	}
+	return out
+}
+func (s Set[T]) Remove(el T) Set[T] {
+	index := s.Index(el)
+	if index == -1 {
+		return s
+	}
+	return s.Pop(index)
+}
+func (s Set[T]) Filter(f func(e T) bool) Set[T] {
+	out := make(Set[T], 0)
+	for _, v := range s {
+		if f(v) {
+			out = append(out, v)
+		}
+	}
+	return out
+}
+func (s Set[T]) ToSlice() Slice[T] {
+	out := make(Slice[T], s.Len())
+	copy(out, s)
+	return out
+}
+func (s Set[T]) ToArray() []T {
+	out := make([]T, len(s))
+	copy(out, s)
+	return out
+}
+func (s Set[T]) ToAnyArray() []any {
+	out := make([]any, len(s))
+	for i, v := range s {
+		out[i] = v
+	}
+	return out
+}