my %C = (%A, %B);

[download]

If you were dealing with hash references, you would do: 

my $C = { %$A, %$B };

[download]

The PDSC is an excellent resource for learning how to grok and manipulate Perl data structures.

Update: As pointed out below by muba and CountZero, you need to keep in mind that hash keys must be unique, and as such any keys in hash A that also exist in hash B will get clobbered.

Cheers,
Darren

In reply to Re: adding to hashes by McDarren
in thread adding to hashes by Anonymous Monk

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