Am 15.04.2011 22:40, schrieb Lyu Mitnick: > Hello Kevin, > > 2011/4/14 Kevin Wolf <kw...@redhat.com <mailto:kw...@redhat.com>> > > Am 13.04.2011 22:59, schrieb Lyu Mitnick: > > Hello Stefan, > > > > I have a question about get_option_parameter(). I am wondering whether > > get_option_parameter is suitable to use instead of doing the > search by > > myself > > in the case like following: > > > > /* Read out options */ > > while (options && options->name) { > > if (!strcmp(options->name, BLOCK_OPT_SIZE)) { > > // do something > > } else if (!strcmp(options->name, BLOCK_OPT_CLUSTER_SIZE)) { > > // do something > > } > > options++; > > } > > Yes, I think it is, though you need to check whether the option has been > set in order to allow use default values. > > Kevin > > > I have no idea about the mean of "check whether the option has been set in > order to allow use default values" , would you mind to give me an > example about > it?? > > So as the example above. I am wondering whether the code should be > rewritten > as: > > /* Read out options */ > if(get_option_parameter(options, BLOCK_OPT_SIZE)) { > // do something > } > > if (get_option_parameter(options, BLOCK_OPT_CLUSTER_SIZE)) { > // do something > }
get_option_parameter would never return NULL in your example. Kevin
