struct

Spectator::Wrapper

Inherits Struct / Value / Object

Typeless wrapper for a value. Stores any value or reference type. However, the type must be known when retrieving the value.

This type is expected to be used like so:

wrapper = Wrapper.new(&quot;wrapped&quot;)
value = wrapper.get(String)

Constructors

new(value)

Creates a wrapper for the specified value.

Source

Instance methods

get(type : T.class) : T forall T

Retrieves the previously wrapped value. The type of the wrapped value must match otherwise an error will be raised.

Source

get

Retrieves the previously wrapped value. Alternate form of #get that accepts a block. The block must return the same type as the wrapped value, otherwise an error will be raised. This method gets around the issue where the value might be a type (i.e. Int32.class). The block will never be executed, it is only used for type information.

wrapper = Wrapper.new(Int32)
# type = wrapper.get(Int32.class) # Does not work!
type = wrapper.get { Int32 } # Returns Int32

Source