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Lang/Objective-C/00-LANG.txt

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+{{language|Objective-C
+|exec=machine
+|strength=weak
+|express=explicit
+|checking=static
+|parampass=value
+|gc=allowed
+|site=http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/
+|LCT=yes}}{{language programming paradigm|Object-oriented}}
+[[wp:Objective-C|Objective-C]] is an [[object-oriented]] superset of the [[derived from::compatible with::C]] language. It mostly copies the message passing system from [[derived from::Smalltalk]]. It was popularized by NeXT, and then again by [[Apple Inc]] with [[Mac OS X]] and [[iOS]] to implement the [[Cocoa]] frameworks. Its main reference implementation is within the [[gcc]] compiler, maintained mostly by Apple.
+
+As of October 2011, with the release of [http://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptual/WhatsNewXcode/Articles/xcode_4_2.html#//apple_ref/doc/uid/00200-SW1 XCode 4.2], Apple switched from [[gcc]] to [[wp:Clang|Clang]] as its default compiler. [[wp:Clang|Clang]]/[[wp:LLVM|LLVM]] offers competitive execution times, better compile times, improved error messages, and supports a simpler alternative syntax for expressing NSArray & NSDictionary literals and indexing. In the same release Apple also introduced automatic reference counting (ARC) which eliminates the need to manually release/retain memory. With ARC the compiler reports an error any time it encounters a call to release, autorelease, retain, or dealloc.
+
+The release of Xcode 4.4 (4.5 for iOS) added [http://clang.llvm.org/docs/ObjectiveCLiterals.html syntax to specify literals] for <code>NSArray</code>, <code>NSDictionary</code>, <code>NSNumber</code>, and <code>NSString</code>, as well as subscript syntax to access elements of <code>NSArray</code> and <code>NSDictionary</code>.
+
+Unless otherwise stated, Objective-C code samples will assume that they are compiled with ARC enabled, and that the compiler supports Objective-C literals and Blocks.
+
+For details of how to compile and run examples of Rosetta Code tasks written in Objective C under Linux or Windows see [http://www.gnu.org/software/gnustep/ GNUstep]
+<br clear=right>

Lang/Objective-C/00-META.yaml

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+---
+from: http://rosettacode.org/wiki/Category:Objective-C

Lang/Objective-C/100-doors

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+../../Task/100-doors/Objective-C

Lang/Objective-C/99-bottles-of-beer

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+../../Task/99-bottles-of-beer/Objective-C

Lang/Objective-C/AVL-tree

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+../../Task/AVL-tree/Objective-C

Lang/Objective-C/Accumulator-factory

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+../../Task/Accumulator-factory/Objective-C

Lang/Objective-C/Add-a-variable-to-a-class-instance-at-runtime

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+../../Task/Add-a-variable-to-a-class-instance-at-runtime/Objective-C

Lang/Objective-C/Anonymous-recursion

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+../../Task/Anonymous-recursion/Objective-C

Lang/Objective-C/Array-concatenation

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+../../Task/Array-concatenation/Objective-C

Lang/Objective-C/Arrays

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+../../Task/Arrays/Objective-C

Lang/Objective-C/Assertions

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+../../Task/Assertions/Objective-C

Lang/Objective-C/Associative-array-Creation

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+../../Task/Associative-array-Creation/Objective-C

Lang/Objective-C/Associative-array-Iteration

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+../../Task/Associative-array-Iteration/Objective-C

Lang/Objective-C/Associative-array-Merging

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+../../Task/Associative-array-Merging/Objective-C

Lang/Objective-C/Averages-Mode

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+../../Task/Averages-Mode/Objective-C

Lang/Objective-C/Averages-Simple-moving-average

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+../../Task/Averages-Simple-moving-average/Objective-C

Lang/Objective-C/Bin-given-limits

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+../../Task/Bin-given-limits/Objective-C

Lang/Objective-C/Binary-search

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+../../Task/Binary-search/Objective-C

Lang/Objective-C/Break-OO-privacy

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+../../Task/Break-OO-privacy/Objective-C

Lang/Objective-C/Call-an-object-method

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+../../Task/Call-an-object-method/Objective-C

Lang/Objective-C/Check-that-file-exists

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+../../Task/Check-that-file-exists/Objective-C

Lang/Objective-C/Classes

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+../../Task/Classes/Objective-C

Lang/Objective-C/Closures-Value-capture

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+../../Task/Closures-Value-capture/Objective-C

Lang/Objective-C/Collections

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+../../Task/Collections/Objective-C

Lang/Objective-C/Command-line-arguments

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+../../Task/Command-line-arguments/Objective-C

Lang/Objective-C/Constrained-genericity

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+../../Task/Constrained-genericity/Objective-C

Lang/Objective-C/Copy-a-string

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+../../Task/Copy-a-string/Objective-C

Lang/Objective-C/Count-occurrences-of-a-substring

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+../../Task/Count-occurrences-of-a-substring/Objective-C

Lang/Objective-C/Create-a-file

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+../../Task/Create-a-file/Objective-C

Lang/Objective-C/Create-a-two-dimensional-array-at-runtime

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+../../Task/Create-a-two-dimensional-array-at-runtime/Objective-C

Lang/Objective-C/Cumulative-standard-deviation

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+../../Task/Cumulative-standard-deviation/Objective-C

Lang/Objective-C/Date-format

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+../../Task/Date-format/Objective-C

Lang/Objective-C/Day-of-the-week

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+../../Task/Day-of-the-week/Objective-C

Lang/Objective-C/Deal-cards-for-FreeCell

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+../../Task/Deal-cards-for-FreeCell/Objective-C

Lang/Objective-C/Delegates

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+../../Task/Delegates/Objective-C

Lang/Objective-C/Delete-a-file

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+../../Task/Delete-a-file/Objective-C

Lang/Objective-C/Determine-if-a-string-is-numeric

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+../../Task/Determine-if-a-string-is-numeric/Objective-C

Lang/Objective-C/Distributed-programming

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+../../Task/Distributed-programming/Objective-C

Lang/Objective-C/Documentation

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+../../Task/Documentation/Objective-C

Lang/Objective-C/Dot-product

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+../../Task/Dot-product/Objective-C

Lang/Objective-C/Empty-program

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+../../Task/Empty-program/Objective-C

Lang/Objective-C/Enumerations

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+../../Task/Enumerations/Objective-C

Lang/Objective-C/Environment-variables

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+../../Task/Environment-variables/Objective-C

Lang/Objective-C/Ethiopian-multiplication

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+../../Task/Ethiopian-multiplication/Objective-C

Lang/Objective-C/Exceptions

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+../../Task/Exceptions/Objective-C

Lang/Objective-C/Exceptions-Catch-an-exception-thrown-in-a-nested-call

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+../../Task/Exceptions-Catch-an-exception-thrown-in-a-nested-call/Objective-C

Lang/Objective-C/Execute-a-system-command

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+../../Task/Execute-a-system-command/Objective-C

Lang/Objective-C/Fibonacci-sequence

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+../../Task/Fibonacci-sequence/Objective-C

Lang/Objective-C/File-input-output

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+../../Task/File-input-output/Objective-C

Lang/Objective-C/File-modification-time

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+../../Task/File-modification-time/Objective-C

Lang/Objective-C/File-size

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+../../Task/File-size/Objective-C

Lang/Objective-C/Filter

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+../../Task/Filter/Objective-C

Lang/Objective-C/FizzBuzz

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+../../Task/FizzBuzz/Objective-C

Lang/Objective-C/Flatten-a-list

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+../../Task/Flatten-a-list/Objective-C

Lang/Objective-C/Formatted-numeric-output

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+../../Task/Formatted-numeric-output/Objective-C

Lang/Objective-C/Function-composition

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+../../Task/Function-composition/Objective-C

Lang/Objective-C/Greatest-element-of-a-list

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+../../Task/Greatest-element-of-a-list/Objective-C

Lang/Objective-C/Guess-the-number

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+../../Task/Guess-the-number/Objective-C

Lang/Objective-C/Guess-the-number-With-feedback-player-

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+../../Task/Guess-the-number-With-feedback-player-/Objective-C

Lang/Objective-C/HTTP

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+../../Task/HTTP/Objective-C

Lang/Objective-C/Hash-from-two-arrays

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+../../Task/Hash-from-two-arrays/Objective-C

Lang/Objective-C/Haversine-formula

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+../../Task/Haversine-formula/Objective-C

Lang/Objective-C/Hello-world-Graphical

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+../../Task/Hello-world-Graphical/Objective-C

Lang/Objective-C/Hello-world-Standard-error

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+../../Task/Hello-world-Standard-error/Objective-C

Lang/Objective-C/Hello-world-Text

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+../../Task/Hello-world-Text/Objective-C

Lang/Objective-C/Horners-rule-for-polynomial-evaluation

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+../../Task/Horners-rule-for-polynomial-evaluation/Objective-C

Lang/Objective-C/Host-introspection

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+../../Task/Host-introspection/Objective-C

Lang/Objective-C/Hostname

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+../../Task/Hostname/Objective-C

Lang/Objective-C/Huffman-coding

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+../../Task/Huffman-coding/Objective-C

Lang/Objective-C/Increment-a-numerical-string

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+../../Task/Increment-a-numerical-string/Objective-C

Lang/Objective-C/Inheritance-Multiple

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+../../Task/Inheritance-Multiple/Objective-C

Lang/Objective-C/Inheritance-Single

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+../../Task/Inheritance-Single/Objective-C

Lang/Objective-C/JSON

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+../../Task/JSON/Objective-C

Lang/Objective-C/Knuth-shuffle

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+../../Task/Knuth-shuffle/Objective-C

Lang/Objective-C/Knuths-algorithm-S

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+../../Task/Knuths-algorithm-S/Objective-C

Lang/Objective-C/LZW-compression

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+../../Task/LZW-compression/Objective-C

Lang/Objective-C/Letter-frequency

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+../../Task/Letter-frequency/Objective-C

Lang/Objective-C/Levenshtein-distance

@@ -0,0 +1 @@
+../../Task/Levenshtein-distance/Objective-C

Lang/Objective-C/Literals-String

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+../../Task/Literals-String/Objective-C

Lang/Objective-C/Longest-increasing-subsequence

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+../../Task/Longest-increasing-subsequence/Objective-C

Lang/Objective-C/Look-and-say-sequence

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+../../Task/Look-and-say-sequence/Objective-C

Lang/Objective-C/Loops-Foreach

@@ -0,0 +1 @@
+../../Task/Loops-Foreach/Objective-C

Lang/Objective-C/Luhn-test-of-credit-card-numbers

@@ -0,0 +1 @@
+../../Task/Luhn-test-of-credit-card-numbers/Objective-C

Lang/Objective-C/MD5

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+../../Task/MD5/Objective-C

Lang/Objective-C/Man-or-boy-test

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+../../Task/Man-or-boy-test/Objective-C

Lang/Objective-C/Mutex

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+../../Task/Mutex/Objective-C

Lang/Objective-C/Mutual-recursion

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+../../Task/Mutual-recursion/Objective-C

Lang/Objective-C/Named-parameters

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+../../Task/Named-parameters/Objective-C

Lang/Objective-C/Nested-function

@@ -0,0 +1 @@
+../../Task/Nested-function/Objective-C

Lang/Objective-C/Null-object

@@ -0,0 +1 @@
+../../Task/Null-object/Objective-C

Lang/Objective-C/Number-names

@@ -0,0 +1 @@
+../../Task/Number-names/Objective-C

Lang/Objective-C/Object-serialization

@@ -0,0 +1 @@
+../../Task/Object-serialization/Objective-C

Lang/Objective-C/Optional-parameters

@@ -0,0 +1 @@
+../../Task/Optional-parameters/Objective-C

Lang/Objective-C/Parametric-polymorphism

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+../../Task/Parametric-polymorphism/Objective-C

Lang/Objective-C/Polymorphic-copy

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+../../Task/Polymorphic-copy/Objective-C

Lang/Objective-C/Polymorphism

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+../../Task/Polymorphism/Objective-C

Lang/Objective-C/Power-set

@@ -0,0 +1 @@
+../../Task/Power-set/Objective-C

Lang/Objective-C/Priority-queue

@@ -0,0 +1 @@
+../../Task/Priority-queue/Objective-C

Lang/Objective-C/Program-name

@@ -0,0 +1 @@
+../../Task/Program-name/Objective-C

Lang/Objective-C/Range-extraction

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+../../Task/Range-extraction/Objective-C