EOSIO Developer Portal - EOSIO Development Documentation

Defines data stream for reading and writing data in the form of bytes.

Classes

Type	Name
class	eosio::datastream A data stream for reading and writing data in the form of bytes.
class	eosio::datastream< size_t > Specialization of datastream used to help determine the final size of a serialized value. Specialization of datastream used to help determine the final size of a serialized value.

Functions

Functions Documentation

function operator<<

template<typename Stream, typename T>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const eosio::binary_extension< T > & be
)

Serialize a binary_extension.

Serialize a binary_extension into a stream

Parameters:

ds - The stream to write
opt - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream, typename T>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    eosio::binary_extension< T > & be
)

Deserialize a binary_extension.

Deserialize a binary_extension from a stream

Parameters:

ds - The stream to read
opt - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream, typename... Ts>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const std::variant< Ts... > & var
)

Serialize an std::variant.

Serialize an std::variant into a stream

Parameters:

ds - The stream to write
opt - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function deserialize

template<int I, typename Stream, typename... Ts>
void eosio::deserialize(
    datastream< Stream > & ds,
    std::variant< Ts... > & var,
    int i
)

function operator>>

template<typename Stream, typename... Ts>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    std::variant< Ts... > & var
)

Deserialize an std::variant.

Deserialize an std::variant from a stream

Parameters:

ds - The stream to read
opt - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T1, typename T2>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::pair< T1, T2 > & t
)

Serialize an std::pair.

Serialize an std::pair

Parameters:

ds - The stream to write
t - The value to serialize

Template parameters:

DataStream - Type of datastream
Args - Type of the objects contained in the tuple

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T1, typename T2>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::pair< T1, T2 > & t
)

Deserialize an std::pair.

Deserialize an std::pair

Parameters:

ds - The stream to read
t - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
Args - Type of the objects contained in the tuple

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename Stream, typename T>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const std::optional< T > & opt
)

Serialize an optional.

Serialize an optional into a stream

Parameters:

ds - The stream to write
opt - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream, typename T>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    std::optional< T > & opt
)

Deserialize an optional.

Deserialize an optional from a stream

Parameters:

ds - The stream to read
opt - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const eosio::symbol_code sym_code
)

Serialize a symbol_code.

Serialize a symbol_code into a stream

Parameters:

ds - The stream to write
sym - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    eosio::symbol_code & sym_code
)

Deserialize a symbol_code.

Deserialize a symbol_code from a stream

Parameters:

ds - The stream to read
symbol - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const eosio::symbol sym
)

Serialize a symbol.

Serialize a symbol into a stream

Parameters:

ds - The stream to write
sym - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    eosio::symbol & sym
)

Deserialize a symbol.

Deserialize a symbol from a stream

Parameters:

ds - The stream to read
symbol - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream, typename T>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const ::eosio::ignore_wrapper< T > & val
)

Serialize ignored_wrapper's T value.

Serialize an ignored_wrapper type into a stream

Parameters:

ds - The stream to write
val - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream, typename T>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const ::eosio::ignore< T > & val
)

Serialize an ignored type.

Serialize an ignored type into a stream

Parameters:

ds - The stream to write
ignore - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream, typename T>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    ::eosio::ignore< T > 
)

Deserialize an ignored type.

Deserialize an ignored type from a stream

Parameters:

ds - The stream to read
ignored - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const capi_public_key & pubkey
)

Serialize a public_key.

Serialize a public_key into a stream

Parameters:

ds - The stream to write
pubkey - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    capi_public_key & pubkey
)

Deserialize a public_key.

Deserialize a public_key from a stream

Parameters:

ds - The stream to read
pubkey - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const eosio::public_key & pubkey
)

Serialize an eosio::public_key.

Serialize an eosio::public_key into a stream

Parameters:

ds - The stream to write
pubkey - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    eosio::public_key & pubkey
)

Deserialize an eosio::public_key.

Deserialize an eosio::public_key from a stream

Parameters:

ds - The stream to read
pubkey - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const eosio::signature & sig
)

Serialize an eosio::signature.

Serialize an eosio::signature into a stream

Parameters:

ds - The stream to write
sig - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    eosio::signature & sig
)

Deserialize an eosio::signature.

Deserialize an eosio::signature from a stream

Parameters:

ds - The stream to read
sig - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const key256 & d
)

Serialize a key256.

Serialize a key256 into a stream

Parameters:

ds - The stream to write
d - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    key256 & d
)

Deserialize a key256.

Deserialize a key256 from a stream

Parameters:

ds - The stream to read
d - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream, size_t Size>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const fixed_bytes< Size > & d
)

Serialize a fixed_bytes.

Serialize a fixed_bytes into a stream

Parameters:

ds - The stream to write
d - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream, size_t Size>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    fixed_bytes< Size > & d
)

Deserialize a fixed_bytes.

Deserialize a fixed_bytes from a stream

Parameters:

ds - The stream to read
d - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const bool & d
)

Serialize a bool into a stream.

Serialize a bool into a stream

Parameters:

ds - The stream to read
d - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    bool & d
)

Deserialize a bool.

Deserialize a bool from a stream

Parameters:

ds - The stream to read
d - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const capi_checksum256 & d
)

Serialize a checksum256.

Serialize a checksum256 into a stream

Parameters:

ds - The stream to write
d - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    capi_checksum256 & d
)

Deserialize a checksum256.

Deserialize a checksum256 from a stream

Parameters:

ds - The stream to read
d - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename DataStream>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::string & v
)

Serialize a string.

Serialize a string into a stream

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::string & v
)

Deserialize a string.

Deserialize a string from a stream

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T, std::size_t N>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::array< T, N > & v
)

Serialize a fixed size std::array.

Serialize a fixed size std::array

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the array
N - Size of the array

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T, std::size_t N>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::array< T, N > & v
)

Deserialize a fixed size std::array.

Deserialize a fixed size std::array

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the array
N - Size of the array

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T, std::enable_if_t< _datastream_detail::is_pointer< T >()> *>
DataStream& eosio::operator>>(
    DataStream & ds,
    T 
)

Deserialize a a pointer.

Pointer should not be serialized, so this function will always throws an error

Parameters:

ds - The stream to read

Template parameters:

DataStream - Type of datastream
T - Type of the pointer

Returns:

DataStream& - Reference to the datastream

Post

Throw an exception if it is a pointer

function operator<<

template<typename DataStream, typename T, std::size_t N, std::enable_if_t<!_datastream_detail::is_primitive< T >() &&!_datastream_detail::is_pointer< T >()> *>
DataStream & eosio::operator<<(
    DataStream & ds,
    const T(&) v
)

Serialize a fixed size C array of non-primitive and non-pointer type.

Serialize a fixed size C array of primitive type. Serialize a fixed size C array of non-primitive and non-pointer type

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the pointer

Returns:

DataStream& - Reference to the datastream

Serialize a fixed size C array of primitive type

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the pointer

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T, std::size_t N, std::enable_if_t<!_datastream_detail::is_primitive< T >() &&!_datastream_detail::is_pointer< T >()> *>
DataStream & eosio::operator>>(
    DataStream & ds,
    T(&) v
)

Deserialize a fixed size C array of non-primitive and non-pointer type.

Deserialize a fixed size C array of primitive type. Deserialize a fixed size C array of non-primitive and non-pointer type

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

T - Type of the object contained in the array
N - Size of the array
DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

Deserialize a fixed size C array of primitive type

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

T - Type of the object contained in the array
N - Size of the array
DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::vector< char > & v
)

Serialize a vector of char.

Serialize a vector of char

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::vector< T > & v
)

Serialize a vector.

Serialize a vector

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the vector

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::vector< char > & v
)

Deserialize a vector of char.

Deserialize a vector of char

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::vector< T > & v
)

Deserialize a vector.

Deserialize a vector

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the vector

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::set< T > & s
)

Serialize a set.

Serialize a set

Parameters:

ds - The stream to write
s - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the set

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::set< T > & s
)

Deserialize a set.

Deserialize a set

Parameters:

ds - The stream to read
s - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of the object contained in the set

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename K, typename V>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::map< K, V > & m
)

Serialize a map.

Serialize a map

Parameters:

ds - The stream to write
m - The value to serialize

Template parameters:

DataStream - Type of datastream
K - Type of the key contained in the map
V - Type of the value contained in the map

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename K, typename V>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::map< K, V > & m
)

Deserialize a map.

Deserialize a map

Parameters:

ds - The stream to read
m - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
K - Type of the key contained in the map
V - Type of the value contained in the map

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T>
DataStream& eosio::operator<<(
    DataStream & ds,
    const boost::container::flat_set< T > & s
)

Serialize a flat_set.

Serialize a flat_set

Parameters:

ds - The stream to write
s - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the value contained in the flat_set

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T>
DataStream& eosio::operator>>(
    DataStream & ds,
    boost::container::flat_set< T > & s
)

Deserialize a flat_set.

Deserialize a flat_set

Parameters:

ds - The stream to read
s - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of the value contained in the flat_set

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename K, typename V>
DataStream& eosio::operator<<(
    DataStream & ds,
    const boost::container::flat_map< K, V > & m
)

Serialize a flat map.

Serialize a flat map

Parameters:

ds - The stream to write
m - The value to serialize

Template parameters:

DataStream - Type of datastream
K - Type of the key contained in the flat map
V - Type of the value contained in the flat map

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename K, typename V>
DataStream& eosio::operator>>(
    DataStream & ds,
    boost::container::flat_map< K, V > & m
)

Deserialize a flat map.

Deserialize a flat map

Parameters:

ds - The stream to read
m - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
K - Type of the key contained in the flat map
V - Type of the value contained in the flat map

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename... Args>
DataStream& eosio::operator<<(
    DataStream & ds,
    const std::tuple< Args... > & t
)

Serialize a tuple.

Serialize a tuple

Parameters:

ds - The stream to write
t - The value to serialize

Template parameters:

DataStream - Type of datastream
Args - Type of the objects contained in the tuple

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename... Args>
DataStream& eosio::operator>>(
    DataStream & ds,
    std::tuple< Args... > & t
)

Deserialize a tuple.

Deserialize a tuple

Parameters:

ds - The stream to read
t - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
Args - Type of the objects contained in the tuple

Returns:

DataStream& - Reference to the datastream

function operator<<

template<typename DataStream, typename T, std::enable_if_t< std::is_class< T >::value > *>
DataStream & eosio::operator<<(
    DataStream & ds,
    const T & v
)

Serialize a class.

Serialize a primitive type. Serialize a class

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of class

Returns:

DataStream& - Reference to the datastream

Serialize a primitive type

Parameters:

ds - The stream to write
v - The value to serialize

Template parameters:

DataStream - Type of datastream
T - Type of the primitive type

Returns:

DataStream& - Reference to the datastream

function operator>>

template<typename DataStream, typename T, std::enable_if_t< std::is_class< T >::value > *>
DataStream & eosio::operator>>(
    DataStream & ds,
    T & v
)

Deserialize a class.

Deserialize a primitive type. Deserialize a class

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of class

Returns:

DataStream& - Reference to the datastream

Deserialize a primitive type

Parameters:

ds - The stream to read
v - The destination for deserialized value

Template parameters:

DataStream - Type of datastream
T - Type of the primitive type

Returns:

DataStream& - Reference to the datastream

function unpack

template<typename T>
T eosio::unpack(
    const char * buffer,
    size_t len
)

Unpack data inside a fixed size buffer as T.

Unpack data inside a fixed size buffer as T

Template parameters:

T - Type of the unpacked data

Parameters:

buffer - Pointer to the buffer
len - Length of the buffer

Returns:

T - The unpacked data

function unpack

template<typename T>
T eosio::unpack(
    const std::vector< char > & bytes
)

Unpack data inside a variable size buffer as T.

Unpack data inside a variable size buffer as T

Template parameters:

T - Type of the unpacked data

Parameters:

bytes - Buffer

Returns:

T - The unpacked data

function pack_size

template<typename T>
size_t eosio::pack_size(
    const T & value
)

Get the size of the packed data.

Get the size of the packed data

Template parameters:

T - Type of the data to be packed

Parameters:

value - Data to be packed

Returns:

size_t - Size of the packed data

function pack

template<typename T>
std::vector<char> eosio::pack(
    const T & value
)

Get packed data.

Get packed data

Template parameters:

T - Type of the data to be packed

Parameters:

value - Data to be packed

Returns:

bytes - The packed data

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const capi_checksum160 & cs
)

Serializea capi_checksum160 type.

Serialize a capi_checksum160 type

Parameters:

ds - The stream to write
cs - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    capi_checksum160 & cs
)

Deserialize a capi_checksum160 type.

Deserialize a capi_checksum160 type

Parameters:

ds - The stream to read
cs - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator<<

template<typename Stream>
datastream<Stream>& eosio::operator<<(
    datastream< Stream > & ds,
    const capi_checksum512 & cs
)

Serialize a capi_checksum512 type.

Serialize a capi_checksum512 type

Parameters:

ds - The stream to write
cs - The value to serialize

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream

function operator>>

template<typename Stream>
datastream<Stream>& eosio::operator>>(
    datastream< Stream > & ds,
    capi_checksum512 & cs
)

Deserialize a capi_checksum512 type.

Deserialize a capi_checksum512 type

Parameters:

ds - The stream to read
cs - The destination for deserialized value

Template parameters:

Stream - Type of datastream buffer

Returns:

datastream& - Reference to the datastream