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04
2017
02

R语言字符串处理命令 [查询]

下一篇:R语言字符串处理命令 [分割]


grep(pattern, x, ignore.case = FALSE, perl = FALSE, value = FALSE,

     fixed = FALSE, useBytes = FALSE, invert = FALSE)


grepl(pattern, x, ignore.case = FALSE, perl = FAL