introduce name rather than creating XXXVector-names

Author: realead

pandas/_libs/hashtable_func_helper.pxi.in

@@ -6,26 +6,26 @@ WARNING: DO NOT edit .pxi FILE directly, .pxi is generated from .pxi.in
 
 {{py:
 
-# dtype, ttype, c_type, to_c_type
-dtypes = [('complex128', 'complex128', 'khcomplex128_t',
-                         'to_khcomplex128_t'),
-          ('complex64', 'complex64', 'khcomplex64_t',
-                        'to_khcomplex64_t'),
-          ('float64', 'float64', 'float64_t', ''),
-          ('float32', 'float32', 'float32_t', ''),
-          ('uint64', 'uint64', 'uint64_t', ''),
-          ('uint32', 'uint32', 'uint32_t', ''),
-          ('uint16', 'uint16', 'uint16_t', ''),
-          ('uint8', 'uint8', 'uint8_t', ''),
-          ('object', 'pymap', 'object', ''),
-          ('int64', 'int64', 'int64_t', ''),
-          ('int32', 'int32', 'int32_t', ''),
-          ('int16', 'int16', 'int16_t', ''),
-          ('int8', 'int8', 'int8_t', '')]
+# name, dtype, ttype, c_type, to_c_type
+dtypes = [('Complex128', 'complex128', 'complex128',
+                         'khcomplex128_t', 'to_khcomplex128_t'),
+          ('Complex64', 'complex64', 'complex64',
+                        'khcomplex64_t', 'to_khcomplex64_t'),
+          ('Float64', 'float64', 'float64', 'float64_t', ''),
+          ('Float32', 'float32', 'float32', 'float32_t', ''),
+          ('UInt64', 'uint64', 'uint64', 'uint64_t', ''),
+          ('UInt32', 'uint32', 'uint32', 'uint32_t', ''),
+          ('UInt16', 'uint16', 'uint16', 'uint16_t', ''),
+          ('UInt8', 'uint8', 'uint8', 'uint8_t', ''),
+          ('Object', 'object', 'pymap', 'object', ''),
+          ('Int64', 'int64', 'int64', 'int64_t', ''),
+          ('Int32', 'int32', 'int32', 'int32_t', ''),
+          ('Int16', 'int16', 'int16', 'int16_t', ''),
+          ('Int8', 'int8', 'int8', 'int8_t', '')]
 
 }}
 
-{{for dtype, ttype, c_type, to_c_type in dtypes}}
+{{for name, dtype, ttype, c_type, to_c_type in dtypes}}
 
 
 @cython.wraparound(False)
@@ -96,11 +96,7 @@ cpdef value_count_{{dtype}}(const {{dtype}}_t[:] values, bint dropna):
 
         int ret = 0
 
-    {{if dtype[0]!='u'}}
-    result_keys = {{dtype.title()}}Vector()
-    {{else}}
-    result_keys = {{'U'+dtype[1::].title()}}Vector()
-    {{endif}}
+    result_keys = {{name}}Vector()
     result_counts = Int64Vector()
     table = kh_init_{{ttype}}()