Searching within a ch. string

The following is TRUE if the indicated string is found:

regexpr("sdhch", "gdfsa-sdhchc-88") > 0

See ?regexpr

Either of the next two will break up a string into words. The
first needs to know the delimiters whereas the second
needs to know the contents:

strsplit("gdfsa-sdhchc-88", "\\W+")[[1]]

[1] "gdfsa"  "sdhchc" "88"

library(gsubfn)
strapply("gdfsa-sdhchc-88", "\\w+", c)[[1]]

[1] "gdfsa"  "sdhchc" "88"

See ?strplit and ?regex and also the gsubfn home page at:
http://gsubfn.googlecode.com
where you can find info on strapply and also further resources
on regular expressions.

Hi all, is there any function to find some words in a character-string? For
example suppose the string is : "gdfsa-sdhchc-88", now I want to find
whether this string contains "sdhch". Is there any R function to do that?

Regards,
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