Encode and decode lists of instances of a single other argument type.
For example, if you want to pass:
[3, 7, 9, 15]
You can create an argument like this:
ListOf(Integer())
The serialized form of the entire list is subject to the limit imposed by MAX_VALUE_LENGTH
. List elements are represented as 16-bit length prefixed strings. The argument type passed to the ListOf
initializer is responsible for producing the serialized form of each element.
Parameters | optional | a boolean indicating whether this argument can be omitted in the protocol. |
Present Since | 10.0 |
Instance Variable | elementType | The Argument instance used to encode and decode list elements (note, not an arbitrary IArgumentType implementation: arguments must be implemented using only the fromString and toString methods, not the fromBox and toBox methods). |
Method | __init__ | Create an Argument. |
Method | fromString | Convert the serialized form of a list of instances of some type back into that list. |
Method | toString | Serialize the given list of objects to a single string. |
Inherited from Argument:
Instance Variable | optional | Undocumented |
Method | retrieve | Retrieve the given key from the given dictionary, removing it if found. |
Method | fromBox | Populate an 'out' dictionary with mapping names to Python values decoded from an 'in' AmpBox mapping strings to string values. |
Method | toBox | Populate an 'out' AmpBox with strings encoded from an 'in' dictionary mapping names to Python values. |
Method | fromStringProto | Convert a string to a Python value. |
Method | toStringProto | Convert a Python object to a string. |
Argument
instance used to encode and decode list elements (note, not an arbitrary IArgumentType
implementation: arguments must be implemented using only the fromString
and toString
methods, not the fromBox
and toBox
methods).Create an Argument.
Parameters | elementType | Undocumented |
optional | a boolean indicating whether this argument can be omitted in the protocol. |
Convert the serialized form of a list of instances of some type back into that list.
Serialize the given list of objects to a single string.