initialising super init and other

Question

Im getting the following error:

on the line self = [super init];

cannot assign self outside method init family

also getting yellow triangles on all self.whatever = whatever;

local declaration of "whatever" hides instance variable

@synthesize firstName, lastName, emailAdress, password, admin;

//current course funkade med nil men inte @"" vrf ;P
-(id) init
{
    return [self initwithName:@"" lastName:@"" password:@"" admin:@"" currentCourse:nil];
}

-(id) initwithName:(NSString *) firstName
          lastName:(NSString *) lastName
          password:(NSString *) password
             admin:(NSString *) admin
     currentCourse:(NSDictionary *) course
{
    self = [super init];
    if (self) {
        self.firstName = firstName;
        self.lastName = lastName;
        self.password = password;
        self.admin = admin;

    }
    return self;
}

that worked, geez sometimes my dyslexia is really getting the best of me :P thanks alot! — Try to be a success, Apr 24 '13 at 14:13
glad it helps you, furthermore you should avoid using self.whatever in the init methods, take a look to this for more details http://stackoverflow.com/a/5932733/1411844 — tkanzakic, Apr 24 '13 at 14:16
@tkanzakic oh, im actually learning obj-c in school and my teacher never said anything about this :O thanks!!! — Try to be a success, Apr 24 '13 at 14:22

score 2 · Accepted Answer · answered Apr 24 '13 at 14:08

2

You have synthesized @synthesize firstName, lastName, emailAdress, password, admin;

And in your method you are using same name

-(id) initwithName:(NSString *) firstName
          lastName:(NSString *) lastName
          password:(NSString *) password
             admin:(NSString *) admin
     currentCourse:(NSDictionary *) course

Change these to something else or remove synthesize, if your compiler supports auto-synthesize

-(id) initWithName:(NSString *) aFirstName
          lastName:(NSString *) aLastName
          password:(NSString *) aPassword
             admin:(NSString *) aAdmin
     currentCourse:(NSDictionary *) aCourse
{
    self = [super init];
    if (self) {
        self.firstName = aFirstName;
        self.lastName = aLastName;
        self.password = aPassword;
        self.admin = aAdmin;

    }
    return self;
}

answered Apr 24 '13 at 14:08

Anoop Vaidya

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when i do that i get error use of undeclared idetifier did you mean "whatever" thanks for quick reply! – Try to be a success Apr 24 '13 at 14:11
4

Or you can @synthesize firstName = _firstname; etc – Tim Apr 24 '13 at 14:11
1

@Tim: yea, this is 3rd way of doing, 1st was skip manual-synthesing if he uses new compiler. 2nd Rename parameters. – Anoop Vaidya Apr 24 '13 at 14:14
@AnoopVaidya i use latest verison of xcode does that mean i have new compiler? – Try to be a success Apr 24 '13 at 14:17
1

@nalydbob: Yes, so now make a copy of your project and try commenting all your `@synthesize`, but rename the method as initWithName..... And then you need to use `_firstName=aFirstName` etc – Anoop Vaidya Apr 24 '13 at 14:23

Gordon Dove · Answer 2 · 2013-04-26T00:17:20.750

Anoop has nailed the properties stuff, but your first problem remains unanswered.

My first post was " I think that the reason you can't assign to self is that you're method signature for init is not correct.

I'm not 100% sure of this, but I think that for an implementation of X, init should return (X*) " which is bogus - (id) init; is completely valid.

The error message doesn't feel completely accurate for the following, but amongst your problems is that in - (id) init, you call [self initWith....], but at this point, self has not been set. If you want to write that code once, you'll have to refactor, but the better solution, IMHO, is

- (id) init {
    self = [super init];
    if ( self) {
        self.firstName = @"";
        self.lastName = @"";
        self.password = @"";
        self.admin = @"";
    }
    return self;
}

For a bonus point, I'd also like to point out that you don't use/set course :)

@anoop, I know this, I'm trying to explain the first error, but stand by for an updated answer, as I now see the problem :) — Gordon Dove, Apr 26 '13 at 00:09

initialising super init and other

2 Answers2