# NOT RUN {
trim("white space at end ")
trim(" white space at start and end ")
trim(c(" string1 ", " string2", "string 3 "))
tmp <- data.frame(a = c(" string1 ", " string2", "string 3 "),
b = c(" strong one ", " string two", " third string "),
c = c(" str1 ", " str2", "str3 "))
tmp
trim(tmp)
# }
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