[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'fpjson' (#fcl)

TJSONData.IsNull

Is the data a null value ?

Declaration

Source position: fpjson.pp line 177

public property TJSONData.IsNull : Boolean
  read GetIsNull;

Description

IsNull is True only for JSONType=jtNull, i.e. for a TJSONNull instance. In all other cases, it is False. This value cannot be set.

See also

TJSONType

  

Possible types of JSON data

JSONType

  

The native JSON data type represented by this object

TJSONNull

  

Class to represent boolean JSON data.

AsFloat

  

Access the raw JSON value as a float

Value

  

The value of this data object as a variant.

AsInt64

  

Access the raw JSON value as an 64-bit integer

AsString

  

Access the raw JSON value as a string

AsInteger

  

Access the raw JSON value as an 32-bit integer

AsBoolean

  

Access the raw JSON value as a boolean

AsJSON

  

Return a JSON representation of the value


Documentation generated on: May 14 2021