Class: Dry::Core::Container::Item
- Inherits:
-
Object
- Object
- Dry::Core::Container::Item
- Defined in:
- lib/dry/core/container/item.rb,
lib/dry/core/container/item/factory.rb,
lib/dry/core/container/item/callable.rb,
lib/dry/core/container/item/memoizable.rb
Overview
Base class to abstract Memoizable and Callable implementations
Direct Known Subclasses
Defined Under Namespace
Classes: Callable, Factory, Memoizable
Instance Attribute Summary collapse
-
#item ⇒ Mixed
readonly
The item to be solved later.
-
#options ⇒ Hash
readonly
The options to memoize, call or no.
Instance Method Summary collapse
- #call ⇒ Object
- #callable? ⇒ Boolean
-
#initialize(item, options = {}) ⇒ Item
constructor
A new instance of Item.
-
#map(func) ⇒ Object
Build a new item with transformation applied.
- #value? ⇒ Boolean
Constructor Details
#initialize(item, options = {}) ⇒ Item
Returns a new instance of Item.
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# File 'lib/dry/core/container/item.rb', line 18 def initialize(item, = {}) @item = item @options = { call: item.is_a?(::Proc) && item.parameters.empty? }.merge() end |
Instance Attribute Details
#item ⇒ Mixed (readonly)
Returns the item to be solved later.
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# File 'lib/dry/core/container/item.rb', line 12 def item @item end |
#options ⇒ Hash (readonly)
Returns the options to memoize, call or no.
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# File 'lib/dry/core/container/item.rb', line 15 def @options end |
Instance Method Details
#call ⇒ Object
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# File 'lib/dry/core/container/item.rb', line 26 def call raise NotImplementedError end |
#callable? ⇒ Boolean
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# File 'lib/dry/core/container/item.rb', line 36 def callable? [:call] end |
#map(func) ⇒ Object
Build a new item with transformation applied
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# File 'lib/dry/core/container/item.rb', line 43 def map(func) if callable? self.class.new(-> { func.(item.call) }, ) else self.class.new(func.(item), ) end end |
#value? ⇒ Boolean
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# File 'lib/dry/core/container/item.rb', line 31 def value? !callable? end |