YAML::ArrayConverter(Converter) - Crystal 1.16.3

# module YAML::ArrayConverter(Converter)

##
Overview

Converter to be used with `YAML::Serializable` to serialize the elements of an `Array(T)` with the custom converter.

    require "yaml"

    class Timestamp
      include YAML::Serializable

      @[YAML::Field(converter: YAML::ArrayConverter(Time::EpochConverter))]
      property values : Array(Time)
    end

    timestamp = Timestamp.from_yaml(%({"values":[1459859781,1567628762]}))
    timestamp.values  # => [2016-04-05 12:36:21 UTC, 2019-09-04 20:26:02 UTC]
    timestamp.to_yaml # => "---\nvalues:\n- 1459859781\n- 1567628762\n"

`YAML::ArrayConverter.new` should be used if the nested converter is also an instance instead of a type.

    require "yaml"

    class Timestamp
      include YAML::Serializable

      @[YAML::Field(converter: YAML::ArrayConverter.new(Time::Format.new("%b %-d, %Y")))]
      property values : Array(Time)
    end

    timestamp = Timestamp.from_yaml(%({"values":["Apr 5, 2016","Sep 4, 2019"]}))
    timestamp.values  # => [2016-04-05 00:00:00 UTC, 2019-09-04 00:00:00 UTC]
    timestamp.to_yaml # => "---\nvalues:\n- Apr 5, 2016\n- Sep 4, 2019\n"

This implies that `YAML::ArrayConverter(T)` and `YAML::ArrayConverter(T.class).new(T)` perform the same serializations.

##
Defined in:

yaml/from_yaml.cr
yaml/to_yaml.cr

##
Constructors

- .new(converter : Converter)

##
Class Method Summary

- .from_yaml(ctx : YAML::ParseContext, node : YAML::Nodes::Node) : Array
- .to_yaml(values : Array, yaml : YAML::Nodes::Builder)

##
Constructor Detail

def self.new(converter : Converter) #

##
Class Method Detail

def self.from_yaml(ctx : YAML::ParseContext, node : YAML::Nodes::Node) : Array #
def self.to_yaml(values : Array, yaml : YAML::Nodes::Builder) #