in reply to
Copy of an anonymous hash?
Dear Anonymous,The topic of your problem is called deep copy and it's worth while searchingfor it ... and he has a column on it ...
There is shallow copy in one extreme and deep copy in the other an in the middle lots of intermediate solutions, which one is the good one depends on the particular data representation.
For instance, if you are cloning an object representing an XML node, you will like to deep-copy all its children but not the pointer to its parent.
Shallow copy is usually a good solution:
all you need is to do a shallow copy whenever you change a
A Programming Language, 1962
Programming the 1900 series in COBOL, 1974
Algorithms + Data Structures = Programs, 1976
The C Programming Language, 1978
System V - Interface definition, 1986
Z80 Assembly Language Programming, 1979
TheSOURCE User's Manual, 1979
The C Primer, 1983
Interactive Fortran 77, A Hands on Approach, 1984
Perl.1 man page, 1991
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