Questions tagged [alloc]

207 questions
1
vote
2 answers

alloc() error in swift

So I've just updated my swift to 2.0 and obviously a couple of errors appeared in my code. Thats what I have right now. unc loadRssFeed(data: NSURL) { var myRssParser : ParserManager = ParserManager.alloc().initWithURL(data) as! ParserManager …
1
vote
1 answer

Using move_alloc in a derived type

I have written a derived type that stores a multidimensional array. The array will be read from a file to an array b. I then want to transfer b to the derived type Space using member a. The advantage for mvalloc is not having to allocate two large…
Charles
  • 145
  • 2
  • 10
1
vote
2 answers

why can't I use partial struct initialization for a malloced struct in C

Apperently in C99 you can simply initialize a statically allocated struct in this way struct sometype { int a; double b; }; sometype a = { .a = 0; }; Well, this does not apply to a struct on heap like this. struct sometype *a =…
Xeechem
  • 35
  • 1
  • 6
1
vote
2 answers

Assistance with a Memory Allocation Error in c++, linux using g++

I've searched for others with similar problem's to mine, but they all have much different code than I. When I compile the Following code with g++ I get the Error: basketbOOP: malloc.c:2451: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char *)…
Craig
  • 113
  • 4
1
vote
3 answers

template style matrix implementation in c

From time to time I use the following code for generating a matrix style datastructure typedef double myType; typedef struct matrix_t{ |Compilation started at Mon Apr 5 02:24:15 myType…
monkeyking
  • 6,670
  • 24
  • 61
  • 81
1
vote
3 answers

Cocoa example - Why there is NO need to retain or release messages

I'm new to Objective-C and cocoa. In the guide provided by Apple for Cocoa, there is a confusing example in memory management: Suppose you want to implement a method to reset the counter. You have a couple of choices. The first implementation…
1
vote
4 answers

Why is alloc needed in Objective-C object initialization?

I have been going over some tutorials in Objective-C and I am confused when it comes to the command alloc() and how it is used to initialize an object. The tutorial says to do the following and I am having trouble figuring out why it is…
webworm
  • 10,587
  • 33
  • 120
  • 217
1
vote
1 answer

Allocating memory of vector whose type is own Class C++

I've so far few posts about allocating memory for vectors ( Allocating memory for class in C++ Allocating memory for class in C++, for example) but I didn't manage to find the solution for the problem I'm facing right now. Let's go.. According to…
user1960582
  • 21
  • 1
  • 3
1
vote
5 answers

Overriding init method to allocate memory for instance variable object

I am attempting to override the init method of a class so that initializing the object also initializes the ivar object: -(id)init { if (self = [super init]) { someIVarObject = [SomeClass alloc] init]; } return self; …
user2000809
  • 496
  • 2
  • 13
1
vote
1 answer

Properly free memory alloc'd with enif_resource_alloc

I have written an Erlang C NIF that returns a pointer to a structure after calling new and for now just increments a variable on insert. I am wondering how to properly destroy the original resource, or at least mark it for GC. I am having no…
BAR
  • 15,909
  • 27
  • 97
  • 185
1
vote
1 answer

GKPeerPickerController throwing exception "expected expression"

I have written this little piece of code: GKPeerPickerController *picker = [[GKPeerPickerController alloc] init]; but even after restarting my Mac XCode is telling me: "expected expression"! Anyone having any idea solving this problem? Thanks
user1710004
  • 209
  • 1
  • 4
  • 12
1
vote
1 answer

ObjC: using 'self' in init and/or initWithFrame:

I heard from someone that the state of a class is not yet stable inside -(id)init, so using 'self.something' is not recommended inside init, but I have a UIView subclass that need to add some subviews to itself when the class is created, so I have…
hzxu
  • 5,753
  • 11
  • 60
  • 95
1
vote
1 answer

Objects properties not reachable from all classes

I have 3 classes in my project : HeliController, FlightView and ConnectionView. HeliController stores some connection data which is to be used by both FlightView and ConnectionView. In both ConnectionView and HeliController I have //…
chwi
  • 2,752
  • 2
  • 41
  • 66
1
vote
1 answer

Crash when I try to alloc a UIPopoverController

Hi I am at my wits end with what I am doing wrong here. Has anyone experienced anything similar? I checked the apple developer forums, google, stack overflow and couldn't find anything. MyViewController *myView; myView = [[MyViewController alloc]…
The Bird
  • 397
  • 2
  • 8
  • 19
1
vote
4 answers

Alloc a new objective C object to a retained property?

Sorry for asking a totally basic question, but if I have a synthesized property that is retained. self.myProperty = [[NSObject alloc] init]; will cause a memory leak? So am I correct in thinking that I need to do self.myProperty = [[NSObject…
wfbarksdale
  • 7,498
  • 15
  • 65
  • 88