class Concurrent::Map

def fetch_or_store(key, default_value = NULL)

Experimental RBS support (using type sampling data from the type_fusion project). 

def fetch_or_store: (String key, ?Object default_value) -> (Array[String] | Sprockets::Asset | File::Stat)

This signature was generated using 3 samples from 1 application.

Returns:
  • (Object) - the value or default value

Other tags:
    Yieldreturn: - default value

Other tags:
    Yieldparam: key -

Other tags:
    Yield: - default value for a key

Parameters:
  • default_value (Object) --
  • key (Object) -- 
def fetch_or_store(key, default_value = NULL)
  fetch(key) do
    put(key, block_given? ? yield(key) : (NULL == default_value ? raise_fetch_no_key : default_value))
  end
end