diff --git a/pkg/gen/gljimports/gljimports_darwin_amd64.go b/pkg/gen/gljimports/gljimports_darwin_amd64.go
index f64df1d..862a983 100644
--- a/pkg/gen/gljimports/gljimports_darwin_amd64.go
+++ b/pkg/gen/gljimports/gljimports_darwin_amd64.go
@@ -3477,6 +3477,8 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.ConstructPersistentStructMap", github_com_glojurelang_glojure_pkg_lang.ConstructPersistentStructMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.Count", github_com_glojurelang_glojure_pkg_lang.Count)
 	_register("github.com/glojurelang/glojure/pkg/lang.Counted", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Counted)(nil)).Elem())
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateLazilyPersistentVector)
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateOwningLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateOwningLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentHashMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentHashMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentStructMapSlotMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentStructMapSlotMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentTreeMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentTreeMap)
@@ -3781,7 +3783,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIllegalStateError", github_com_glojurelang_glojure_pkg_lang.NewIllegalStateError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIndexOutOfBoundsError", github_com_glojurelang_glojure_pkg_lang.NewIndexOutOfBoundsError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewKeyword", github_com_glojurelang_glojure_pkg_lang.NewKeyword)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.NewLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLazySeq", github_com_glojurelang_glojure_pkg_lang.NewLazySeq)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewList", github_com_glojurelang_glojure_pkg_lang.NewList)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLongChunk", github_com_glojurelang_glojure_pkg_lang.NewLongChunk)
@@ -3814,7 +3815,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVar", github_com_glojurelang_glojure_pkg_lang.NewVar)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVarWithRoot", github_com_glojurelang_glojure_pkg_lang.NewVarWithRoot)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVector", github_com_glojurelang_glojure_pkg_lang.NewVector)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewVectorFromCollection", github_com_glojurelang_glojure_pkg_lang.NewVectorFromCollection)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVolatile", github_com_glojurelang_glojure_pkg_lang.NewVolatile)
 	_register("github.com/glojurelang/glojure/pkg/lang.Next", github_com_glojurelang_glojure_pkg_lang.Next)
 	_register("github.com/glojurelang/glojure/pkg/lang.Node", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Node)(nil)).Elem())
@@ -3901,6 +3901,7 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.Throwable", github_com_glojurelang_glojure_pkg_lang.Throwable)
 	_register("github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)))
+	_register("github.com/glojurelang/glojure/pkg/lang.ToSlice", github_com_glojurelang_glojure_pkg_lang.ToSlice)
 	_register("github.com/glojurelang/glojure/pkg/lang.ToString", github_com_glojurelang_glojure_pkg_lang.ToString)
 	_register("github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)))
diff --git a/pkg/gen/gljimports/gljimports_darwin_arm64.go b/pkg/gen/gljimports/gljimports_darwin_arm64.go
index eedf4b1..cdc8482 100644
--- a/pkg/gen/gljimports/gljimports_darwin_arm64.go
+++ b/pkg/gen/gljimports/gljimports_darwin_arm64.go
@@ -3477,6 +3477,8 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.ConstructPersistentStructMap", github_com_glojurelang_glojure_pkg_lang.ConstructPersistentStructMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.Count", github_com_glojurelang_glojure_pkg_lang.Count)
 	_register("github.com/glojurelang/glojure/pkg/lang.Counted", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Counted)(nil)).Elem())
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateLazilyPersistentVector)
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateOwningLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateOwningLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentHashMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentHashMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentStructMapSlotMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentStructMapSlotMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentTreeMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentTreeMap)
@@ -3781,7 +3783,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIllegalStateError", github_com_glojurelang_glojure_pkg_lang.NewIllegalStateError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIndexOutOfBoundsError", github_com_glojurelang_glojure_pkg_lang.NewIndexOutOfBoundsError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewKeyword", github_com_glojurelang_glojure_pkg_lang.NewKeyword)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.NewLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLazySeq", github_com_glojurelang_glojure_pkg_lang.NewLazySeq)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewList", github_com_glojurelang_glojure_pkg_lang.NewList)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLongChunk", github_com_glojurelang_glojure_pkg_lang.NewLongChunk)
@@ -3814,7 +3815,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVar", github_com_glojurelang_glojure_pkg_lang.NewVar)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVarWithRoot", github_com_glojurelang_glojure_pkg_lang.NewVarWithRoot)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVector", github_com_glojurelang_glojure_pkg_lang.NewVector)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewVectorFromCollection", github_com_glojurelang_glojure_pkg_lang.NewVectorFromCollection)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVolatile", github_com_glojurelang_glojure_pkg_lang.NewVolatile)
 	_register("github.com/glojurelang/glojure/pkg/lang.Next", github_com_glojurelang_glojure_pkg_lang.Next)
 	_register("github.com/glojurelang/glojure/pkg/lang.Node", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Node)(nil)).Elem())
@@ -3901,6 +3901,7 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.Throwable", github_com_glojurelang_glojure_pkg_lang.Throwable)
 	_register("github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)))
+	_register("github.com/glojurelang/glojure/pkg/lang.ToSlice", github_com_glojurelang_glojure_pkg_lang.ToSlice)
 	_register("github.com/glojurelang/glojure/pkg/lang.ToString", github_com_glojurelang_glojure_pkg_lang.ToString)
 	_register("github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)))
diff --git a/pkg/gen/gljimports/gljimports_linux_amd64.go b/pkg/gen/gljimports/gljimports_linux_amd64.go
index 1ca1c3b..d37adc4 100644
--- a/pkg/gen/gljimports/gljimports_linux_amd64.go
+++ b/pkg/gen/gljimports/gljimports_linux_amd64.go
@@ -3477,6 +3477,8 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.ConstructPersistentStructMap", github_com_glojurelang_glojure_pkg_lang.ConstructPersistentStructMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.Count", github_com_glojurelang_glojure_pkg_lang.Count)
 	_register("github.com/glojurelang/glojure/pkg/lang.Counted", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Counted)(nil)).Elem())
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateLazilyPersistentVector)
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateOwningLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateOwningLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentHashMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentHashMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentStructMapSlotMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentStructMapSlotMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentTreeMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentTreeMap)
@@ -3781,7 +3783,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIllegalStateError", github_com_glojurelang_glojure_pkg_lang.NewIllegalStateError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIndexOutOfBoundsError", github_com_glojurelang_glojure_pkg_lang.NewIndexOutOfBoundsError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewKeyword", github_com_glojurelang_glojure_pkg_lang.NewKeyword)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.NewLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLazySeq", github_com_glojurelang_glojure_pkg_lang.NewLazySeq)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewList", github_com_glojurelang_glojure_pkg_lang.NewList)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLongChunk", github_com_glojurelang_glojure_pkg_lang.NewLongChunk)
@@ -3814,7 +3815,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVar", github_com_glojurelang_glojure_pkg_lang.NewVar)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVarWithRoot", github_com_glojurelang_glojure_pkg_lang.NewVarWithRoot)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVector", github_com_glojurelang_glojure_pkg_lang.NewVector)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewVectorFromCollection", github_com_glojurelang_glojure_pkg_lang.NewVectorFromCollection)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVolatile", github_com_glojurelang_glojure_pkg_lang.NewVolatile)
 	_register("github.com/glojurelang/glojure/pkg/lang.Next", github_com_glojurelang_glojure_pkg_lang.Next)
 	_register("github.com/glojurelang/glojure/pkg/lang.Node", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Node)(nil)).Elem())
@@ -3901,6 +3901,7 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.Throwable", github_com_glojurelang_glojure_pkg_lang.Throwable)
 	_register("github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)))
+	_register("github.com/glojurelang/glojure/pkg/lang.ToSlice", github_com_glojurelang_glojure_pkg_lang.ToSlice)
 	_register("github.com/glojurelang/glojure/pkg/lang.ToString", github_com_glojurelang_glojure_pkg_lang.ToString)
 	_register("github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)))
diff --git a/pkg/gen/gljimports/gljimports_linux_arm64.go b/pkg/gen/gljimports/gljimports_linux_arm64.go
index 7190022..2b23757 100644
--- a/pkg/gen/gljimports/gljimports_linux_arm64.go
+++ b/pkg/gen/gljimports/gljimports_linux_arm64.go
@@ -3477,6 +3477,8 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.ConstructPersistentStructMap", github_com_glojurelang_glojure_pkg_lang.ConstructPersistentStructMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.Count", github_com_glojurelang_glojure_pkg_lang.Count)
 	_register("github.com/glojurelang/glojure/pkg/lang.Counted", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Counted)(nil)).Elem())
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateLazilyPersistentVector)
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateOwningLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateOwningLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentHashMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentHashMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentStructMapSlotMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentStructMapSlotMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentTreeMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentTreeMap)
@@ -3781,7 +3783,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIllegalStateError", github_com_glojurelang_glojure_pkg_lang.NewIllegalStateError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIndexOutOfBoundsError", github_com_glojurelang_glojure_pkg_lang.NewIndexOutOfBoundsError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewKeyword", github_com_glojurelang_glojure_pkg_lang.NewKeyword)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.NewLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLazySeq", github_com_glojurelang_glojure_pkg_lang.NewLazySeq)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewList", github_com_glojurelang_glojure_pkg_lang.NewList)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLongChunk", github_com_glojurelang_glojure_pkg_lang.NewLongChunk)
@@ -3814,7 +3815,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVar", github_com_glojurelang_glojure_pkg_lang.NewVar)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVarWithRoot", github_com_glojurelang_glojure_pkg_lang.NewVarWithRoot)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVector", github_com_glojurelang_glojure_pkg_lang.NewVector)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewVectorFromCollection", github_com_glojurelang_glojure_pkg_lang.NewVectorFromCollection)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVolatile", github_com_glojurelang_glojure_pkg_lang.NewVolatile)
 	_register("github.com/glojurelang/glojure/pkg/lang.Next", github_com_glojurelang_glojure_pkg_lang.Next)
 	_register("github.com/glojurelang/glojure/pkg/lang.Node", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Node)(nil)).Elem())
@@ -3901,6 +3901,7 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.Throwable", github_com_glojurelang_glojure_pkg_lang.Throwable)
 	_register("github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)))
+	_register("github.com/glojurelang/glojure/pkg/lang.ToSlice", github_com_glojurelang_glojure_pkg_lang.ToSlice)
 	_register("github.com/glojurelang/glojure/pkg/lang.ToString", github_com_glojurelang_glojure_pkg_lang.ToString)
 	_register("github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)))
diff --git a/pkg/gen/gljimports/gljimports_windows.go b/pkg/gen/gljimports/gljimports_windows.go
index 608145d..b75f04c 100644
--- a/pkg/gen/gljimports/gljimports_windows.go
+++ b/pkg/gen/gljimports/gljimports_windows.go
@@ -3477,6 +3477,8 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.ConstructPersistentStructMap", github_com_glojurelang_glojure_pkg_lang.ConstructPersistentStructMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.Count", github_com_glojurelang_glojure_pkg_lang.Count)
 	_register("github.com/glojurelang/glojure/pkg/lang.Counted", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Counted)(nil)).Elem())
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateLazilyPersistentVector)
+	_register("github.com/glojurelang/glojure/pkg/lang.CreateOwningLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.CreateOwningLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentHashMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentHashMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentStructMapSlotMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentStructMapSlotMap)
 	_register("github.com/glojurelang/glojure/pkg/lang.CreatePersistentTreeMap", github_com_glojurelang_glojure_pkg_lang.CreatePersistentTreeMap)
@@ -3781,7 +3783,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIllegalStateError", github_com_glojurelang_glojure_pkg_lang.NewIllegalStateError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewIndexOutOfBoundsError", github_com_glojurelang_glojure_pkg_lang.NewIndexOutOfBoundsError)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewKeyword", github_com_glojurelang_glojure_pkg_lang.NewKeyword)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewLazilyPersistentVector", github_com_glojurelang_glojure_pkg_lang.NewLazilyPersistentVector)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLazySeq", github_com_glojurelang_glojure_pkg_lang.NewLazySeq)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewList", github_com_glojurelang_glojure_pkg_lang.NewList)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewLongChunk", github_com_glojurelang_glojure_pkg_lang.NewLongChunk)
@@ -3814,7 +3815,6 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVar", github_com_glojurelang_glojure_pkg_lang.NewVar)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVarWithRoot", github_com_glojurelang_glojure_pkg_lang.NewVarWithRoot)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVector", github_com_glojurelang_glojure_pkg_lang.NewVector)
-	_register("github.com/glojurelang/glojure/pkg/lang.NewVectorFromCollection", github_com_glojurelang_glojure_pkg_lang.NewVectorFromCollection)
 	_register("github.com/glojurelang/glojure/pkg/lang.NewVolatile", github_com_glojurelang_glojure_pkg_lang.NewVolatile)
 	_register("github.com/glojurelang/glojure/pkg/lang.Next", github_com_glojurelang_glojure_pkg_lang.Next)
 	_register("github.com/glojurelang/glojure/pkg/lang.Node", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.Node)(nil)).Elem())
@@ -3901,6 +3901,7 @@ func RegisterImports(_register func(string, interface{})) {
 	_register("github.com/glojurelang/glojure/pkg/lang.Throwable", github_com_glojurelang_glojure_pkg_lang.Throwable)
 	_register("github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TimeoutError", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TimeoutError)(nil)))
+	_register("github.com/glojurelang/glojure/pkg/lang.ToSlice", github_com_glojurelang_glojure_pkg_lang.ToSlice)
 	_register("github.com/glojurelang/glojure/pkg/lang.ToString", github_com_glojurelang_glojure_pkg_lang.ToString)
 	_register("github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)).Elem())
 	_register("*github.com/glojurelang/glojure/pkg/lang.TransientMap", reflect.TypeOf((*github_com_glojurelang_glojure_pkg_lang.TransientMap)(nil)))
diff --git a/pkg/lang/lazilypersistentvector.go b/pkg/lang/lazilypersistentvector.go
new file mode 100644
index 0000000..63f5616
--- /dev/null
+++ b/pkg/lang/lazilypersistentvector.go
@@ -0,0 +1,27 @@
+package lang
+
+func CreateOwningLazilyPersistentVector(items ...any) IPersistentVector {
+	if len(items) <= 32 {
+		return NewVector(items...)
+	}
+	return NewVector(items...)
+}
+
+func CreateLazilyPersistentVector(obj any) IPersistentVector {
+	switch obj := obj.(type) {
+	case IReduceInit:
+		return obj.ReduceInit(IFnFunc(func(args ...any) any {
+			acc, item := args[0], args[1]
+			return acc.(IPersistentVector).Cons(item)
+		}), emptyVector).(IPersistentVector)
+	case ISeq:
+		// TODO: optimize for ISeq by building the tree directly with a
+		// PersistentVector implementaiton
+		slc := seqToSlice(obj)
+		return NewVector(slc...)
+	case Seqable:
+		return CreateLazilyPersistentVector(obj.Seq())
+	default:
+		return NewVector(ToSlice(obj)...)
+	}
+}
diff --git a/pkg/lang/slices.go b/pkg/lang/slices.go
index 06bf0a9..469cde5 100644
--- a/pkg/lang/slices.go
+++ b/pkg/lang/slices.go
@@ -1,8 +1,33 @@
 package lang
 
-import "reflect"
+import (
+	"fmt"
+	"reflect"
+)
 
-func SliceSet(slc interface{}, idx int, val interface{}) {
+func SliceSet(slc any, idx int, val any) {
 	slcVal := reflect.ValueOf(slc)
 	slcVal.Index(idx).Set(reflect.ValueOf(val))
 }
+
+func ToSlice(x any) []any {
+	if IsNil(x) {
+		return nil
+	}
+	if s, ok := x.(ISeq); ok {
+		res := make([]interface{}, 0, Count(x))
+		for s := Seq(s); s != nil; s = s.Next() {
+			res = append(res, s.First())
+		}
+		return res
+	}
+	xVal := reflect.ValueOf(x)
+	if xVal.Kind() == reflect.Slice || xVal.Kind() == reflect.Array {
+		res := make([]interface{}, xVal.Len())
+		for i := 0; i < xVal.Len(); i++ {
+			res[i] = xVal.Index(i).Interface()
+		}
+		return res
+	}
+	panic(fmt.Errorf("ToSlice not supported on type: %T", x))
+}
diff --git a/pkg/lang/vector.go b/pkg/lang/vector.go
index 45a7f6c..26578ee 100644
--- a/pkg/lang/vector.go
+++ b/pkg/lang/vector.go
@@ -51,26 +51,6 @@ func NewVector(values ...any) *Vector {
 	}
 }
 
-func NewVectorFromCollection(c any) *Vector {
-	// TODO: match clojure's behavior here. for now, just make it work
-	// for seqs.
-	var items []any
-	for seq := Seq(c); seq != nil; seq = seq.Next() {
-		items = append(items, seq.First())
-	}
-	return NewVector(items...)
-}
-
-func NewLazilyPersistentVector(x any) IPersistentVector {
-	// TODO: IReduceInit, Iterable
-	switch x := x.(type) {
-	case ISeq:
-		return NewVectorFromCollection(x)
-	default:
-		return NewVector(toSlice(x)...)
-	}
-}
-
 var (
 	_ APersistentVector = (*Vector)(nil)
 	_ IPersistentVector = (*Vector)(nil)
diff --git a/pkg/runtime/rtcompat.go b/pkg/runtime/rtcompat.go
index 4df7a98..d419258 100644
--- a/pkg/runtime/rtcompat.go
+++ b/pkg/runtime/rtcompat.go
@@ -167,30 +167,14 @@ func (rt *RTMethods) FindVar(qualifiedSym *Symbol) *Var {
 
 func (rt *RTMethods) Alength(x interface{}) int {
 	xVal := reflect.ValueOf(x)
-	if xVal.Kind() == reflect.Slice {
+	if xVal.Kind() == reflect.Slice || xVal.Kind() == reflect.Array {
 		return xVal.Len()
 	}
 	panic(fmt.Errorf("Alength not supported on type: %T", x))
 }
 
 func (rt *RTMethods) ToArray(coll interface{}) interface{} {
-	if lang.IsNil(coll) {
-		return nil
-	}
-	switch coll := coll.(type) {
-	case []interface{}:
-		return coll
-	case lang.ISeq, lang.IPersistentCollection:
-		res := make([]interface{}, 0, lang.Count(coll))
-		for s := lang.Seq(coll); s != nil; s = lang.Next(s) {
-			res = append(res, lang.First(s))
-		}
-		return res
-	}
-	if v := reflect.ValueOf(coll); v.Kind() == reflect.Slice {
-		return coll
-	}
-	panic(fmt.Errorf("ToArray not supported on type: %T", coll))
+	return lang.ToSlice(coll)
 }
 
 var (
diff --git a/pkg/stdlib/glojure/core.glj b/pkg/stdlib/glojure/core.glj
index 0458b33..6b94f3b 100644
--- a/pkg/stdlib/glojure/core.glj
+++ b/pkg/stdlib/glojure/core.glj
@@ -361,7 +361,7 @@
 	([a b c d e] [a b c d e])
 	([a b c d e f] [a b c d e f])
   ([a b c d e f & args]
-     (github.com$glojurelang$glojure$pkg$lang.NewLazilyPersistentVector (cons a (cons b (cons c (cons d (cons e (cons f args)))))))))
+     (github.com$glojurelang$glojure$pkg$lang.CreateLazilyPersistentVector (cons a (cons b (cons c (cons d (cons e (cons f args)))))))))
 
 (defn vec
   "Creates a new vector containing the contents of coll. Java arrays
@@ -372,8 +372,8 @@
    (if (vector? coll)
      (if (instance? github.com$glojurelang$glojure$pkg$lang.IObj coll)
        (with-meta coll nil)
-       (github.com$glojurelang$glojure$pkg$lang.NewVectorFromCollection coll))
-     (github.com$glojurelang$glojure$pkg$lang.NewVectorFromCollection coll))))
+       (github.com$glojurelang$glojure$pkg$lang.CreateLazilyPersistentVector coll))
+     (github.com$glojurelang$glojure$pkg$lang.CreateLazilyPersistentVector coll))))
 
 (defn hash-map
   "keyval => key val
diff --git a/pkg/stdlib/glojure/string.glj b/pkg/stdlib/glojure/string.glj
index ba221d4..879b7c9 100644
--- a/pkg/stdlib/glojure/string.glj
+++ b/pkg/stdlib/glojure/string.glj
@@ -8,8 +8,7 @@
 
 (ns glojure.string
   (:refer-glojure :exclude (replace reverse))
-  (:import (java.util.regex Pattern Matcher)
-           glojure.lang.LazilyPersistentVector))
+  (:import (java.util.regex Pattern Matcher)))
 
 (set! *warn-on-reflection* true)
 
diff --git a/scripts/rewrite-core/rewrite.clj b/scripts/rewrite-core/rewrite.clj
index 578cfef..09e39b7 100644
--- a/scripts/rewrite-core/rewrite.clj
+++ b/scripts/rewrite-core/rewrite.clj
@@ -386,7 +386,14 @@
    (sexpr-replace 'clojure.lang.RT/assoc 'github.com$glojurelang$glojure$pkg$lang.Assoc)
    (sexpr-replace 'clojure.lang.RT/subvec 'github.com$glojurelang$glojure$pkg$lang.Subvec)
    (sexpr-replace 'clojure.lang.Util/identical 'github.com$glojurelang$glojure$pkg$lang.Identical)
-   (sexpr-replace 'clojure.lang.LazilyPersistentVector/create 'github.com$glojurelang$glojure$pkg$lang.NewVectorFromCollection)
+
+   (sexpr-replace '(:import (java.util.regex Pattern Matcher) clojure.lang.LazilyPersistentVector)
+                  '(:import (java.util.regex Pattern Matcher)))
+   (sexpr-replace 'clojure.lang.LazilyPersistentVector/create
+                  'github.com$glojurelang$glojure$pkg$lang.CreateLazilyPersistentVector)
+   (sexpr-replace 'clojure.lang.LazilyPersistentVector/createOwning
+                  'github.com$glojurelang$glojure$pkg$lang.CreateOwningLazilyPersistentVector)
+   
    (sexpr-replace '(. clojure.lang.RT (seq coll)) '(github.com$glojurelang$glojure$pkg$lang.Seq coll))
    (sexpr-replace '(list 'new 'clojure.lang.LazySeq (list* '^{:once true} fn* [] body))
                   '(list 'github.com$glojurelang$glojure$pkg$lang.NewLazySeq (list* '^{:once true} fn* [] body)))
@@ -605,7 +612,7 @@
 
    (sexpr-replace
     '(. clojure.lang.LazilyPersistentVector (create (cons a (cons b (cons c (cons d (cons e (cons f args))))))))
-    '(github.com$glojurelang$glojure$pkg$lang.NewLazilyPersistentVector (cons a (cons b (cons c (cons d (cons e (cons f args))))))))
+    '(github.com$glojurelang$glojure$pkg$lang.CreateLazilyPersistentVector (cons a (cons b (cons c (cons d (cons e (cons f args))))))))
 
    (sexpr-replace 'clojure.lang.IDrop 'github.com$glojurelang$glojure$pkg$lang.IDrop)