将 vector 整理

vector.vp

@@ -1,5 +1,3 @@
-import t, c
-from stdint import *
 import memhub
 
 
@@ -23,7 +21,7 @@ class Vector[T]():
             self._grow()
             if self.length >= self.capacity: return
         offset: uint64 = uint64(self.data) + self.length * self.elem_size
-        dst: T* = (T*)offset    # typed pointer: store whole T, not its first byte
+        dst: T* = T*(offset)    # typed pointer: store whole T, not its first byte
         *dst = value
         self.length += 1
 
@@ -40,14 +38,14 @@ class Vector[T]():
     def get(self, index: sizet) -> T:
         if self.data == None: return T(0)
         offset: uint64 = uint64(self.data) + index * self.elem_size
-        typed_ptr = (T*)offset
+        typed_ptr = T*(offset)
         return *typed_ptr
 
     def set(self, index: sizet, value: T):
         if index >= self.length: return
         if self.data == None: return
         offset: uint64 = uint64(self.data) + index * self.elem_size
-        dst: T* = (T*)offset    # typed pointer: store whole T, not its first byte
+        dst: T* = T*(offset)    # typed pointer: store whole T, not its first byte
         *dst = value
 
     def len(self) -> sizet: