4.10. Appending One Array to Another4.10.3. DiscussionThe push function is optimized for appending a list to the end of an array. You can take advantage of Perl's list flattening to join two arrays, but this results in significantly more copying than push: @ARRAY1 = (@ARRAY1, @ARRAY2); Here's an example of push in action: @members = ("Time", "Flies"); @initiates = ("An", "Arrow"); push(@members, @initiates); # @members is now ("Time", "Flies", "An", "Arrow") To insert the elements of one array into the middle of another, use the splice function: splice(@members, 2, 0, "Like", @initiates); print "@members\n"; splice(@members, 0, 1, "Fruit"); splice(@members, -2, 2, "A", "Banana"); print "@members\n"; This is the output: Time Flies Like An Arrow Fruit Flies Like A Banana 4.10.4. See AlsoThe splice and push functions in perlfunc(1) and Chapter 29 of Programming Perl; the "List Values and Arrays" section of Chapter 2 of Programming Perl; the "List Value Constructors" section of perldata(1) Copyright © 2003 O'Reilly & Associates. All rights reserved. |
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