All Cocoa Solutions on Gang of Coders

Total of 252 Cocoa Solutions

Changing the userAgent of NSURLConnection

Iphone Cocoa Cocoa Touch Nsurlconnection

Suppressing "'…' is deprecated" when using respondsToSelector

Objective C Cocoa Xcode Clang

NSPredicate that is the equivalent of SQL's LIKE

Iphone Cocoa Cocoa Touch Core Data Nspredicate

Enable and Disable NSLog in DEBUG mode

Objective C Cocoa Nslog

Get file path and URL for file in temp directory

Objective C Ios Cocoa Nsbundle

How to convert an NSData into an NSString Hex string?

Is there a literal syntax for mutable collections?

Objective C Cocoa Nsmutablearray Nsmutabledictionary Objective C-Literals

Layer-backed NSView rotation and skewed siblings

Macos Cocoa Calayer Nsview

Core Data vs SQLite 3

Cocoa Macos Core Data Sqlite

Object allocate and init in Objective C

Objective C Cocoa Cocoa Touch Memory Management

NSString indexOf in Objective-C

Objective C Cocoa

Properties and Instance Variables in Objective-C

Objective C Cocoa Cocoa Touch Properties Instance Variables

How can I view an NSError?

Iphone Objective C Cocoa Logging

How do I copy or move an NSManagedObject from one context to another?

Cocoa Cocoa Touch Core Data Nsmanagedobject Nsmanagedobjectcontext

NSWindow with NSWindowCollectionBehaviorStationary is visible on the Dashboard. Is this a bug?

Cocoa Nswindow Spaces Apple Expose

Text change notification for an NSTextField

Cocoa Observer Pattern Nstextfield Nsnotifications

How to detect if OS X is in dark mode?

Macos Cocoa Themes

Should I use NSDecimalNumber to deal with money?

Cocoa Cocoa Touch Rounding Currency

How do I debug with NSLog(@"Inside of the iPhone Simulator")?

Iphone Objective C Cocoa Xcode Nslog

How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone?

Iphone Cocoa Time Nstimeinterval

How to bring NSWindow to front and to the current Space?

Store selector as value in an NSDictionary

Cocoa Cocoa Touch Nsdictionary Selector

Data doesn't load in UITableView until I scroll

Objective C Uitableview Cocoa Synchronous

Create an NSAlert with Swift

Swift Cocoa Nsalert

What is double star (eg. NSError **)?

C Objective C Cocoa Pointers Multiple Indirection

Hiding NSTableView header?

Objective C Cocoa Nstableview

How to read data from NSFileHandle line by line?

Objective C Cocoa Nsfilehandle

What's the difference and compatibility of CGLayer and CALayer?

Cocoa Core Graphics Calayer Cglayer

How do you print out a stack trace to the console/log in Cocoa?

Objective C Cocoa Callstack Introspection

Cocoa - Notification on NSUserDefaults value change?

Cocoa Notifications Preferences

How do I get first x elements of an NSArray in Cocoa?

Objective C Cocoa

Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X" error?

Ios Macos Cocoa Cocoa Touch Interface Builder

Xcode 4 and nested projects -- header files not found

Cocoa Frameworks Xcode4

OS X - How can a NSViewController find its window?

Macos Cocoa Cocoa Sheet

dispatch_sync vs. dispatch_async on main queue

Objective C Cocoa Core Data Grand Central-Dispatch Objective C-Blocks

How to parse NSString into BOOL in Objective-C?

Objective C Cocoa Nsstring Boolean

When debugging autolayout what is the meaning of the autoresizing mask strings such as h=--& v=-&-?

Cocoa Autolayout

Swift protocols: method does not override any method from its superclass

Cocoa Swift Nslayoutmanager

NSObject subclass in Swift: hash vs hashValue, isEqual vs ==

Swift Cocoa Nsobject

Dependency injection framework for Cocoa?

Objective C Cocoa Dependency Injection

Determine if NSNumber is NaN

Objective C Cocoa Nan Nsnumber

Is there a "right" way to have NSTextFieldCell draw vertically centered text?

Cocoa Customization Vertical Alignment Nstextfieldcell

Xcode Debugger: Why is it only showing me assembler?

Xcode Cocoa Debugging

How to get height for NSAttributedString at a fixed width

Cocoa Nstextview Appkit Nsattributedstring

Cocoa versus Cocoa Touch - What is the difference?

Objective C Cocoa Cocoa Touch

How to resize a UISwitch?

Iphone Cocoa Cocoa Touch

Why are umbrella frameworks discouraged?

Objective C Macos Cocoa

Xcode 7.1 Swift 2 Unknown class in Interface Builder file

Ios Xcode Swift Cocoa

Can I use CocoaPods when creating a Cocoa Touch Framework?

Ios Swift Cocoa Cocoapods Cocoa Touch

Clang Error on "Potential null dereference."

Cocoa Clang Static-Analyzer

NSURL URLWithString: is null with non-english accented characters

Cocoa Special Characters Nsurl

Getting the last day of a month

Objective C Cocoa Touch Cocoa Date Nsdate

Reverse NSString text

Objective C Cocoa Nsstring

Convert NSData bytes to NSString?

Objective C Cocoa Bittorrent

What's the difference between [NSNull null] and nil?

Objective C Cocoa Touch Cocoa Null Nsnull

Open source Objective-C projects with high quality code?

Objective C Cocoa

How to Write OS X Finder plugin

Objective C Cocoa Macos Plugins Finder

Where can I find a list of key codes for use with Cocoa's NSEvent class?

Cocoa Events Keyboard

How to pass userInfo in NSNotification?

Iphone Cocoa Cocoa Touch

Xcode 6 iOS Creating a Cocoa Touch Framework - Architectures issues

Cocoa Ios8 Xcode6 Dynamic Library Ios Universal-Framework

What does "@private" mean in Objective-C?

Ios Objective C Cocoa Private

"Unknown class <MyClass> in Interface Builder file" error at runtime

Cocoa Cocoa Touch Xcode Interface Builder

Objective-C: Extract filename from path string

Objective C Cocoa

How to update a single pod without touching other dependencies

Cocoa Cocoapods Podfile Pod Install

CSS Printing: Avoiding cut-in-half DIVs between pages?

Css Cocoa Printing Page Break

Delete/Reset all entries in Core Data?

Ios Cocoa Cocoa Touch Core Data Nsmanagedobject

Constants in Objective-C

Ios Objective C Cocoa Nsstring Constants

How do I declare class-level properties in Objective-C?

Objective C Cocoa Oop

Execute a terminal command from a Cocoa app

Objective C Cocoa Macos

How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?

Cocoa Cocoa Touch Core Graphics

iOS - Build fails with CocoaPods cannot find header files

Objective C Ios Cocoa Build Cocoapods

Check that an email address is valid on iOS

Objective C Cocoa Email Email Validation

Xcode build failure "Undefined symbols for architecture x86_64"

Objective C Xcode Macos Cocoa Iobluetooth

Why can't code inside unit tests find bundle resources?

Cocoa Unit Testing Xcode Nsbundle Octest

Best way to remove from NSMutableArray while iterating?

Objective C Cocoa

What's the Best Way to Shuffle an NSMutableArray?

Objective C Cocoa Shuffle

NULL vs nil in Objective-C

Objective C Cocoa Null

What's the optimum way of storing an NSDate in NSUserDefaults?

Cocoa Datetime Nsdate Nsuserdefaults Nstimeinterval

How to create a Menubar application for Mac

Macos Cocoa Menubar

What is the best way to solve an Objective-C namespace collision?

Objective C Cocoa Macos Namespaces

How to convert CFStringRef to NSString?

Cocoa String Cfstring

Why are Objective-C delegates usually given the property assign instead of retain?

Objective C Ios Cocoa Delegates

How to initialise a string from NSData in Swift

String Swift Cocoa Nsdata

Regular expressions in an Objective-C Cocoa application

Objective C Regex Cocoa

How do I create delegates in Objective-C?

Ios Objective C Cocoa Callback Delegates

How does an underscore in front of a variable in a cocoa objective-c class work?

Objective C Cocoa Touch Cocoa Variables Syntax

@class vs. #import

Objective C Cocoa Cocoa Touch

Objective-C - Remove last character from string

Ios Objective C String Cocoa Cocoa Touch

Cocoa Autolayout: content hugging vs content compression resistance priority

Cocoa Autolayout

Generate a random alphanumeric string in Cocoa

Objective C Cocoa String Random Alphanumeric

What does the property "Nonatomic" mean?

Ios Objective C Iphone Cocoa Properties

NSString tokenize in Objective-C

Objective C Cocoa Tokenize

How do you set the text in an NSTextField?

Cocoa Macos Nstextfield

Fix warning "Capturing [an object] strongly in this block is likely to lead to a retain cycle" in ARC-enabled code

Cocoa Touch Cocoa Asihttprequest Automatic Ref-Counting Retain

How can i tell if an object has a key value observer attached

Objective C Cocoa Key Key Value-Observing

What's the difference between "bundle display name" and "bundle name" in cocoa application's info plist

Iphone Objective C Cocoa Macos

NSInvocation for Dummies?

Objective C Cocoa Undo Redo

Getting a list of files in a directory with a glob

Ios Objective C Iphone Cocoa Cocoa Touch

NSLog/printf specifier for NSInteger?

Objective C Cocoa 32bit 64bit Nslog Nsinteger

Remove all whitespaces from NSString

Objective C String Cocoa Nsstring

What does the NS prefix mean?

Ios Objective C Cocoa Cocoa Touch Terminology

Changing my CALayer's anchorPoint moves the view

Iphone Cocoa Cocoa Touch Uiview

Cocoa: What's the difference between the frame and the bounds?

Cocoa Cocoa Touch Uiview

Formatting NSDate into particular styles for both year, month, day, and hour, minute, seconds

Cocoa Cocoa Touch Nsdate Nsdateformatter Date Formatting

Getting thread id of current method call

Iphone Objective C Cocoa Multithreading

Use C++ with Cocoa Instead of Objective-C?

C++Objective C Cocoa Language Interoperability

How to manually create icns files using iconutil?

Xcode Macos Cocoa Icons Iconutil

Is there a good charting library for iPhone?

Ios Cocoa Cocoa Touch Charts Core Plot

How to join NSArray elements into an NSString?

How to get Core Data object from specific Object ID?

Ios Macos Cocoa Core Data Nsfetchrequest

filtering NSArray into a new NSArray in Objective-C

Objective C Cocoa Nsarray

Is there a way to suppress warnings in Xcode?

Objective C Xcode Cocoa Cocoa Touch Suppress Warnings

How to perform Callbacks in Objective-C

Objective C Cocoa Callback

Remove autolayout (constraints) in Interface Builder

Xcode Macos Cocoa Interface Builder Osx Snow-Leopard

Understanding reference counting with Cocoa and Objective-C

Iphone Objective C Cocoa Memory

Check whether or not the current thread is the main thread

Objective C Iphone Multithreading Cocoa xamarin.ios

How to use NSCache

Ios Objective C Xcode Cocoa Nscache

"Collection was mutated while being enumerated" on executeFetchRequest

Multithreading Cocoa Core Data

Deep copying an NSArray

Objective C Cocoa Touch Cocoa Nsarray Deep Copy

@synthesize vs @dynamic, what are the differences?

Objective C Cocoa Cocoa Touch Properties Synthesize

SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)

Ios Cocoa Keychain Sskeychain

Best Practice - NSError domains and codes for your own project/app

Objective C Cocoa Core Data Nserror

When is it better to use an NSSet over an NSArray?

Ios Objective C Arrays Cocoa Cocoa Touch

Best way to implement Enums with Core Data

Iphone Objective C Cocoa Cocoa Touch Core Data

Hidden Features of Xcode 4

Cocoa Ios Macos Xcode4 Hidden Features

Learn C first before learning Objective-C

C Objective C Cocoa

How do I make and use a Queue in Objective-C?

Objective C Cocoa Data Structures Queue

Get value from NSTextField

Macos Cocoa Nstextfield

how to get first three characters of an NSString?

Objective C Cocoa

HTML character decoding in Objective-C / Cocoa Touch

Iphone Html Objective C Cocoa Cocoa Touch

How to convert An NSInteger to an int?

Objective C Cocoa Nsinteger

Is there any way to hide "-" (Delete) button while editing UITableView

Ios Iphone Uitableview Cocoa

Interaction beyond bounds of UIView

Iphone Objective C Cocoa Uiview Uibutton

Xcode linker error: file too small for architecture x86_64

Objective C Ios Xcode Macos Cocoa

Input from the keyboard in command line application

Swift Macos Cocoa Command Line

How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?

Objective C Cocoa

NSString: isEqual vs. isEqualToString

Objective C Iphone Cocoa Nsstring

Getting an object from an NSSet

Objective C Cocoa Cocoa Touch Object Nsset

Using NSPredicate to filter an NSArray based on NSDictionary keys

Objective C Cocoa Nsarray Nsdictionary Nspredicate

How do I iterate over an NSArray?

Objective C Cocoa Iteration Nsarray Enumeration

How can I dynamically create a selector at runtime with Objective-C?

Objective C Cocoa Dynamic

How to Check if an NSDate occurs between two other NSDates

Objective C Cocoa Cocoa Touch Datetime Nsdate

NSLog with CGPoint data

Iphone Cocoa Cocoa Touch Core Graphics Nslog

What exactly is a so called "Class Cluster" in Objective-C?

Objective C Cocoa Cocoa Design-Patterns Class Cluster

Can a category implement a protocol in Objective C?

Objective C Cocoa Protocols Categories

Make a two-digit string from a single-digit integer

Objective C String Cocoa Nsstring Number Formatting

How to quit cocoa app when windows close?

Objective C Cocoa

Are "EXC_BREAKPOINT (SIGTRAP)" exceptions caused by debugging breakpoints?

Cocoa Macos Exception Gdb Breakpoints

How to print out the method name and line number and conditionally disable NSLog?

Objective C Cocoa Cocoa Touch Xcode Nslog

cocoapods not installing

Ios Cocoa Cocoapods

What's the best way to put a c-struct in an NSArray?

Iphone Objective C Cocoa Struct Nsarray

View-based NSTableView with rows that have dynamic heights

Objective C Macos Cocoa Osx Lion

Managing multiple asynchronous NSURLConnection connections

Objective C Iphone Cocoa Cocoa Touch Nsurlconnection

Using a constant NSString as the key for NSUserDefaults

Objective C Cocoa Default Value

NSURLRequest setting the HTTP header

Iphone Objective C Cocoa Cocoa Touch Ios

How can I set the icon for a Mac Application in Xcode?

Xcode Cocoa Macos Icons

Sort NSArray of date strings or objects

Objective C Cocoa Sorting Nsarray Nsdate

How to view contents of NSDictionary variable in Xcode debugger?

Objective C Cocoa Xcode Debugging

Picking a Random Object in an NSArray

Objective C Cocoa

Get App Name in Swift

NSLocale currentLocale always returns "en_US" not user's current language

Iphone Objective C Cocoa Internationalization

Understanding NSString comparison

Objective C Cocoa Nsstring String Comparison

How to deprecate a method in Xcode

Objective C Xcode Cocoa Cocoa Touch Deprecated

NSDictionary with ordered keys

Ios Objective C Cocoa Nsdictionary

How to hide the Dock icon

Macos Cocoa Icons Dock Lsuielement

Is there a way to specify argument position/index in NSString stringWithFormat?

Objective C Cocoa

throwing an exception in objective-c/cocoa

Objective C Cocoa Exception Handling

Get current NSDate in timestamp format

Cocoa Cocoa Touch Nsdate Nsdateformatter Unix Timestamp

Check if NSString instance is contained in an NSArray

Cocoa Nsstring Nsarray

Compiler error: "initializer element is not a compile-time constant"

Objective C Cocoa Initialization Compiler Errors Global Variables

Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

C Objective C Cocoa Cocoa Touch

Iterate through files in a folder and its subfolders using Swift's FileManager

Swift Cocoa Nsfilemanager

Compile Error with: switch, "expected expression before"

Iphone Objective C Cocoa Xcode xcode3.2

What is the strong property attribute

Iphone Objective C Ios Cocoa Macos

Objective-C Introspection/Reflection

Objective C Cocoa Xcode Reflection Introspection

How to save a NSImage as a new file

Cocoa Image Macos File Nsimage

Objective-C: Assertion vs. Exception vs. Error

Objective C Cocoa Conventions

How to get UITableViewCell indexPath from the Cell?

Iphone Ios Objective C Xcode Cocoa

Declaring and checking/comparing (bitmask-)enums in Objective-C

Objective C C Cocoa Enums Bitmask

Split NSString multiple times on the same separator

Objective C String Cocoa Touch Cocoa Nsstring

setValue:forUndefinedKey: this class is not key value coding-compliant for the key

Objective C Xcode Cocoa Touch Cocoa

Observing an NSMutableArray for insertion/removal

Cocoa Key Value-Observing Key Value-Coding

Double click an NSTableView row in Cocoa?

Cocoa Nstableview Double Click

Rounding numbers in Objective-C

Objective C Cocoa Macos Formatting Rounding

Where is a Mac Application's NSUserDefaults Data Stored?

Objective C Macos Cocoa Plist Nsuserdefaults

How to compare two dates in Objective-C

Objective C Cocoa Date Date Comparison

Testing file existence using NSURL

Cocoa Osx Snow-Leopard Nsurl Core Foundation Nsfilemanager

How do you convert an iPhone OSStatus code to something useful?

Ios Macos Cocoa Touch Cocoa Error Handling

using dispatch_sync in Grand Central Dispatch

Cocoa Ios Ios4 Grand Central-Dispatch

NSArray Equivalent of Map

Iphone Objective C Cocoa Touch Cocoa Macos

How do I determine the OS version at runtime in OS X or iOS (without using Gestalt)?

Ios Macos Cocoa Macos Carbon

How do I convert NSMutableArray to NSArray?

Objective C Cocoa Touch Cocoa Nsmutablearray Nsarray

How can I upload a photo to a server with the iPhone?

Iphone Cocoa Touch Cocoa Networking

How do I create a NSTimer on a background thread?

Objective C Cocoa Nstimer Nsrunloop Nsblockoperation

Posting NSNotification on the main thread

Ios Objective C Cocoa Nsnotificationcenter

Execute an Action when the Enter-Key is pressed in a NSTextField?

Strip Non-Alphanumeric Characters from an NSString

Cocoa Cocoa Touch Nsstring Nscharacterset

how to use the object property of NSNotificationcenter

Iphone Objective C Cocoa Nsnotificationcenter

Do you need to create an NSAutoreleasePool within a block in GCD?

Iphone Objective C Cocoa Macos Grand Central-Dispatch

How do I create a Cocoa window programmatically?

Objective C Cocoa Nswindow

Number of days in the current month using iOS?

Ios Datetime Cocoa Cocoa Touch Nscalendar

NSPredicate case-insensitive matching on to-many relationship

Objective C Cocoa Core Data

Difference between Foundation Framework and Core Foundation Framework?

Objective C Cocoa Cocoa Touch Foundation Core Foundation

How to make a custom view resize with the window with Cocoa Auto Layout?

The easiest way to write NSData to a file

File Cocoa File Io Save

How can I truncate an NSString to a set length?

Iphone Objective C Cocoa String

How to get the file size given a path?

Objective C Cocoa Macos

Cocoa Custom Notification Example

Objective C Cocoa Notifications

Objective-C Category Causing unrecognized selector

Iphone Objective C Cocoa Categories

NSMutableArray - force the array to hold specific object type only

Objective C Cocoa Nsmutablearray

What is the most efficient way to sort an NSSet?

Objective C Cocoa Data Structures Sorting Nsset

Class method equivalent of -respondsToSelector:

Objective C Cocoa Cocoa Touch

Exception thrown in NSOrderedSet generated accessors

Cocoa Core Data Xcode4

Best way to define private methods for a class in Objective-C

Objective C Cocoa Code Completion

Where to place the "Core Data Stack" in a Cocoa/Cocoa Touch application

Iphone Cocoa Cocoa Touch Core Data

iPhone XCode - How to change title below app icon

Iphone Objective C Cocoa Xcode

Can I add my own code snippets to xcode 4?

Cocoa Xcode Xcode4

How to not stretch an image in UIButton

Ios Cocoa Uibutton

Separate cookie jar per WebView in OS X

Macos Cocoa Cookies Webview

How do copy and mutableCopy apply to NSArray and NSMutableArray?

Cocoa Cocoa Touch Nsmutablearray Nsarray Nscopying

What is the difference between NIB and XIB Interface Builder file formats?

Cocoa Interface Builder

Difference between objectForKey and valueForKey?

Objective C Cocoa Key Value-Coding

Class Foo is implemented in both MyApp and MyAppTestCase. One of the two will be used. Which one is undefined

Objective C Xcode Cocoa Macos

Replace substring of NSAttributedString with another NSAttributedString

String Cocoa Replace Nsattributedstring Foundation

Get Current date & time with [NSDate date]

Objective C Cocoa Nsdate

What are best practices that you use when writing Objective-C and Cocoa?

Iphone Objective C Cocoa Cocoa Touch Ios

Which is the Swift equivalent of isnan()?

Cocoa Swift Nan

Unit Testing of private methods in Xcode

Objective C Cocoa Xcode Tdd Ocunit

Round NSDate to the nearest 5 minutes

Iphone Objective C Cocoa

Ordinal Month-day Suffix Option for NSDateFormatter setDateFormat

Iphone Cocoa Nsdate Nsdateformatter

List of all users and groups

C Objective C Cocoa Macos Macos Carbon

Removing all CALayer's sublayers

Objective C Cocoa Core Animation

Create (sane/safe) filename from any (unsafe) string

Python Cocoa Filenames Pyobjc

Programmatically get path to Application Support folder

Ios Objective C Swift Cocoa

How can I check for an active Internet connection on iOS or macOS?

Ios Macos Cocoa Cocoa Touch Reachability

How do I use NSTimer?

Objective C Cocoa Nstimer

Hidden Features of Xcode

Objective C Xcode Macos Cocoa

How can I duplicate, or copy a Core Data Managed Object?

Cocoa Core Data Nsmanagedobject

How to check the last char of an NSString

Objective C Cocoa Nsstring

NSString property: copy or retain?

Objective C Cocoa Cocoa Touch

What is the best way to unit test Objective-C code?

Objective C Cocoa Unit Testing Xcode

How to handle app URLs in a UIWebView?

Iphone Cocoa Ios Uiwebview Uiwebviewdelegate

What does Apple mean when they say that a NSManagedObjectContext is owned by the thread or queue that created it?

Objective C Multithreading Cocoa Core Data

`[super viewDidLoad]` convention

Iphone Objective C Cocoa Cocoa Touch

How do I get the current date in Cocoa

Objective C Cocoa Nsdate

Number of occurrences of a substring in an NSString?

Objective C Cocoa Nsstring Substring

How do I store an NSRange in a NSMutableArray or other container?

Iphone Cocoa Cocoa Touch Nsobject Nsrange

How can I check that the NSString ends with the certain character(.jpg)?

UIImage aspect fit and align to top

Ios Cocoa Uiimageview Aspect Fit

Create NSString by repeating another string a given number of times

Objective C Cocoa String

Sample code for creating a NSTextField "label"?

Objective C Cocoa User Interface Macos

Send notification to Mountain lion notification center

Objective C Xcode Macos Cocoa Osx Mountain-Lion