I don't know, I definitely get a big difference. This is with Perl 5.10.0
Without study:
Rate index regexp
index 466/s -- -27%
regexp 639/s 37% --
With study:
Rate index regexp
index 467/s -- -54%
regexp 1019/s 118% --
Doesn't it make sense that regexp has an advantage in 5.10 since it is building a trie?
SSF
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