parse string as char

[Timothee Cour via Digitalmars-d-learn]

Is there a simple way to parse a string as a char?
eg:
unittest{
  assert(parseChar(`a`)=='a');
  assert(parseChar(`\n`)=='\n'); //NOTE: I'm looking at `\n` not "\n"
  // should also work with other forms of characters, see
http://dlang.org/lex.html
}
Note, std.conv.to doesn't work (`\n`.to!char does not work)
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