copy: Create a seperate copy of a hash object.

copy-methodsR Documentation

Create a seperate copy of a hash object.


The copy hash method creates a independent copy of a hash object. Creating a copy using the assingment operator, <-, does not work as expected, since hashes are based on environments and environments are reference objects in R. The assignment operator consequently creates a linked copy to the original hash and not an independent copy. The copy method provides an identical unlinked copy of the hash.


A hash object.


signature(x = "hash")

Creates and returns an identical, independent, unreferenced copy of the the hash.


Christopher Brown

See Also



  h <- hash( a=1, b=2 ) <- copy( h )

hash documentation built on March 22, 2022, 5:06 p.m.