core-foundation

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unrecognized selector sent to instance [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: Unrecognized selector sent to instance[详细]

2023-02-14 02:41 分类：问答
How do I log messages / break execution for alloc, retain, release and dealloc of CFType objects?

I want to be able to log messages (and preferably break to the debugger) each time a specific CFType object (for my current purposes, a CGPDFDocument) is allocated, retained, released or deallocated.[详细]

2023-02-13 05:53 分类：问答
iPhone - Objective-C NSURL Memory Leaks galore

I am getting the following memory leak when using NSURL. I use this method in quite a few different places and receive memory leaks all the time using the Leaks instruments.[详细]

2023-02-10 00:33 分类：问答
How do I compare two CFUUIDs (Mac OS X Carbon/CoreFoundation)?

How can I compare two CFUUIDRefs from the CoreFoundation Carbon framework in Mac OS X? Is there an easier way to check if two CFUUIDs are equal other than converting them to string开发者_C百科s and th[详细]

2023-02-07 09:10 分类：问答
Creating custom CFDictionary callbacks

I am trying to implement categories for NSMutableDictionary class with at least two methods: one for NSDictionary that retains (not copies) its keys, and one for NSDictionary that weak references its[详细]

2023-02-07 05:14 分类：问答
Sharing a variable between all instances of one class

Hey, I am making a imageloading system with my tablecells and I need each cell to share the same instance of my imageloader class. Sorry if this is a nooby question, but is it possible to a开发者_开发[详细]

2023-02-04 00:22 分类：问答
[OSX Core Foundation]How can I asynchronously upload a file though HTTP and get a callback called while sending bytes of the stream?

on MacOSX, wit开发者_如何学Goh Core Foundation, I want to upload a large file (several hundreds of megabytes) to a remote server through a REST API.[详细]

2023-01-28 03:32 分类：问答
What is the objective-c equivalent to Java's ByteArrayOutputStream?

I want to prepare a binary mess开发者_开发技巧age in memory before sending it over the network.[详细]

2023-01-27 03:54 分类：问答
Detecting connection errors when using CFStreamCreatePairWithSocketToCFHost

I am finding the doc for CFStreamCreatePairWithSocketToCFHost confusing: Specifically, its not clear to me how the function can set the readStream pointer to null on error.[详细]

2023-01-26 06:33 分类：问答
Few beginner questions regarding NSString

Hey, I got couple of questions regarding NSString. How does these two statements differ? NSString *str = @\"asdasd\";开发者_运维技巧[详细]

2023-01-25 13:17 分类：问答