I think repeating is clearer and in any way, it's faster.
If you have over ten and the prefix is likely to change in the future, use a variable anyhow. 

2;0 juerd@ouranos:~$ perl -e'undef christmas'
Segmentation fault
2;139 juerd@ouranos:~$

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In reply to Re: Is a global variable better than repetition within variables? by Juerd
in thread Is a global variable better than repetition within variables? by c

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