.. _ref_scala_types:

Scalar Value Types
==================


.. _ref_double:

.. _ref_float:

.. _ref_int32:

.. _ref_int64:

.. _ref_uint32:

.. _ref_uint64:

.. _ref_sint32:

.. _ref_sint64:

.. _ref_fixed32:

.. _ref_fixed64:

.. _ref_sfixed32:

.. _ref_sfixed64:

.. _ref_bool:

.. _ref_string:

.. _ref_bytes:


.. csv-table:: Scalar Value Types and their language representation
   :header: ".proto Type", "Note", "C++", "Java", "Python", "Go", "C#", "PHP", "Ruby"
   :widths: auto

   
   "double", "", "double", "double", "float", "float64", "double", "float", "Float"
   "float", "", "float", "float", "float", "float32", "float", "float", "Float"
   "int32", "Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead.", "int32", "int", "int", "int32", "int", "integer", "Bignum or Fixnum (as required)"
   "int64", "Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead.", "int64", "long", "int/long", "int64", "long", "integer/string", "Bignum"
   "uint32", "Uses variable-length encoding.", "uint32", "int", "int/long", "uint32", "uint", "integer", "Bignum or Fixnum (as required)"
   "uint64", "Uses variable-length encoding.", "uint64", "long", "int/long", "uint64", "ulong", "integer/string", "Bignum or Fixnum (as required)"
   "sint32", "Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.", "int32", "int", "int", "int32", "int", "integer", "Bignum or Fixnum (as required)"
   "sint64", "Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.", "int64", "long", "int/long", "int64", "long", "integer/string", "Bignum"
   "fixed32", "Always four bytes. More efficient than uint32 if values are often greater than 2^28.", "uint32", "int", "int", "uint32", "uint", "integer", "Bignum or Fixnum (as required)"
   "fixed64", "Always eight bytes. More efficient than uint64 if values are often greater than 2^56.", "uint64", "long", "int/long", "uint64", "ulong", "integer/string", "Bignum"
   "sfixed32", "Always four bytes.", "int32", "int", "int", "int32", "int", "integer", "Bignum or Fixnum (as required)"
   "sfixed64", "Always eight bytes.", "int64", "long", "int/long", "int64", "long", "integer/string", "Bignum"
   "bool", "", "bool", "boolean", "boolean", "bool", "bool", "boolean", "TrueClass/FalseClass"
   "string", "A string must always contain UTF-8 encoded or 7-bit ASCII text.", "string", "String", "str/unicode", "string", "string", "string", "String (UTF-8)"
   "bytes", "May contain any arbitrary sequence of bytes.", "string", "ByteString", "str", "[]byte", "ByteString", "string", "String (ASCII-8BIT)"