title: Case-insensitive search of a list in R
body: <p>Can I search a character list for a string where I don't know how the string is cased?  Or more generally, I'm trying to reference a column in a dataframe, but I don't know exactly how the columns are cased.  My thought was to search <code>names(myDataFrame)</code> in a case-insensitive manner to return the proper casing of the column.</p>