CODEWITHSUNDEEP
iphoneiosobjective-c
user2777252
user2777252

Reputation:

Incompatible pointer types initializing 'NSMutableDictionary *' with an expression of type 'NSDictionary *'

My warning in Xcode :

Incompatible pointer types initializing 'NSMutableDictionary *' with an expression of type 'NSDictionary *'

For this code :

NSMutableDictionary* dict = [NSDictionary dictionaryWithObjectsAndKeys:
                                 [NSNumber numberWithLongLong:byteCount],@"bytes",
                                 [NSNumber numberWithLong:fileCount],@"files",nil];
    [dict writeToFile:countsPath atomically:YES];

Thank you in advance for your help

Upvotes: 0

Views: 7264

Answers (4)

helloiloveit
helloiloveit

Reputation: 179

I also made a mistake like this:

  NSMutableDictionary *data = @{ @"value" : value, @"contentArray" : arrayData };

Its very tempting to make this problem. :D

Upvotes: 1

thatzprem
thatzprem

Reputation: 4767

NSMutableDictionary is a subclass of NSDictionary and you are trying the vice-versa.

Upvotes: 0

Mahmoud Fayez
Mahmoud Fayez

Reputation: 3459

change this word:

NSMutableDictionary

to

NSDictionary

and fix all errors it will cause

Upvotes: 5

BlueBear
BlueBear

Reputation: 7639

You cannot initialize an NSMutableDictionary to be [NSDictionary .... You can, however, assign an NSMutableDictionary to an NSDictionary after they have been created and initialized. The reason is because NSMutableDictionary is a subclass of NSDictionary, so it can be assigned that way, but not the other way around.

Upvotes: 1

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