Oriented somewhat on dictionary methods.
Return the argument string associated with the named option:
Info<< "-foo: " << args.option("foo") << nl;
Return true if the named option is found
if (args.optionFound("foo")) ...
Return an IStringStream to the named option
old: value = readScalar(IStringStream(args.options()["foo"])());
newer: value = readScalar(args.optionLookup("foo")());
also: List<scalar> lst(args.optionLookup("foo")());
Read a value from the named option
newest: value = args.optionRead<scalar>("foo");
Read a value from the named option if present.
old: if (args.options().found("foo"))
{
value = readScalar(IStringStream(args.options()["foo"])());
}
new: args.optionReadIfPresent("foo", value);
Read a List of values from the named option
patches = args.optionReadList<word>("patches");
Didn't bother adding optionReadListIfPresent<T>(const word&), since it
probably wouldn't be common anyhow.
724b034cc7