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  1. sub('(?(?=.*bd)bd|bc)', 'zz', c('abcabe','abcabd'), perl=TRUE)
Success #stdin #stdout 0.24s 39268KB
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[1] "azzabe" "abcazz"
https://ideone.com/4crMHj
language:
R (R 3.5.2)
created:
7 years ago
visibility:
public

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