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ExtremumJsonConverter

QuantConnect.Optimizer.Objectives.ExtremumJsonConverter

Bases: TypeChangeJsonConverter[Extremum, str]

Class for converting string values to Maximization or Minimization strategy objects

populate_properties

populate_properties: bool

Don't populate any property

This codeEntityType is protected.

convert

convert(value: Extremum) -> str
convert(value: str) -> Extremum

Signature descriptions:

  • Converts a Extremum object into a string

  • Converts a string into its corresponding Extremum object

Parameters:

Name Type Description Default
value Extremum | str
required

can_convert

can_convert(object_type: Type) -> bool

Determines whether this instance can convert the specified object type.

Parameters:

Name Type Description Default
object_type Type

Type of the object.

required

Returns:

Type Description
bool

true if this instance can convert the specified object type; otherwise, false.

create

create(
    type: Type, token: Any
) -> QuantConnect_Util_TypeChangeJsonConverter_T

Creates an instance of the un-projected type to be deserialized

This codeEntityType is protected.

Parameters:

Name Type Description Default
type Type

The input object type, this is the data held in the token

required
token Any

The input data to be converted into a T

required

Returns:

Type Description
QuantConnect_Util_TypeChangeJsonConverter_T

A new instance of T that is to be serialized using default rules.

read_json

read_json(
    reader: Any,
    object_type: Type,
    existing_value: Any,
    serializer: Any,
) -> Object

Reads the JSON representation of the object.

Parameters:

Name Type Description Default
reader Any

The Newtonsoft.Json.JsonReader to read from.

required
object_type Type

Type of the object.

required
existing_value Any

The existing value of object being read.

required
serializer Any

The calling serializer.

required

Returns:

Type Description
Object

The object value.

write_json

write_json(
    writer: Any, value: Any, serializer: Any
) -> None

Writes the JSON representation of the object.

Parameters:

Name Type Description Default
writer Any

The Newtonsoft.Json.JsonWriter to write to.

required
value Any

The value.

required
serializer Any

The calling serializer.

required