strstr returns a pointer; I like being explicit when I test for pointers. – nneonneo. Oct 8, 2012 at 15:31. 3. ... <看更多>

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Just a couple of remarks: You should add a newline after the last line: $ ./nh First char match index: 18 Char: t Exist count: 1 Exist ... ... <看更多>

This functions checks whether a string or character vector x contains the ... [1] TRUE TRUE FALSE # is pattern in any element of 'x'? str_contains(c("def", ... ... <看更多>