I dont know about print, but assignment to a scalar works fine:

perl -e 'print $a=(localtime())[5]'
105
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Update: Or, following BrowserUK:

perl -e 'print +(localtime())[5]'
105
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Update: But not (in response to socketdave):

perl -e 'print (localtime())[5]'
syntax error at -e line 1, near ")["
Execution of -e aborted due to compilation errors.
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It seems we are hitting the finer points in the parser here...