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objective-cで (const修飾子で) 配列を定数としたいとき

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例として、文字列定数を定数配列にしてみる。

ヘッダ

Const.h
extern NSString *const SOME_CONSTANT_ARRAY[];

extern NSUInteger const SIZE_OF_SOME_CONSTANT_ARRAY;

実装

Const.m
NSString *const SOME_CONSTANT_ARRAY[] = { @"hoge", @"fuga", @"piyo" };

NSUInteger const SIZE_OF_SOME_CONSTANT_ARRAY = 3;

使いたいとき

SomeExternalClass.m
NSArray *array = [[NSArray alloc] init];
for(int i = 0; i < SIZE_OF_SOME_CONSTANT_ARRAY; i++)
	[array addObject:SOME_CONSTANT_ARRAY[i]];

// arrayに対する処理・・・

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