Objective C Generics

Objective C Generics是github上一个仿C++, Java, C#中范型的Objective C的实现.

用法如下：

将 ObjectiveCGenerics.h 拖进你的项目.在定义一个新类的时候，使用 GENERICSABLE宏声明一下.

#import "ObjectiveCGenerics.h"

GENERICSABLE(MyClass)

@interface MyClass : NSObject
  
   

@property (nonatomic, strong) NSString* name;

@end

  

之后你就能像C++, Java, C#里边一样使用范型了.

ObjectiveCGenerics.h源码如下：

//Copyright 2013 Tomer Shiri generics@shiri.info
//
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at
//
//http://www.apache.org/licenses/LICENSE-2.0
//
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.

#if NS_BLOCKS_AVAILABLE
#define GENERICSABLE(__className) \
GENERICSABLEWITHOUTBLOCKS(__className) \
GENERICSABLEWITHBLOCKS(__className)
#else
#define GENERICSABLE(__className) GENERICSABLEWITHOUTBLOCKS(__className)
#endif

#define GENERICSABLEWITHOUTBLOCKS(__className)\
@protocol __className 
  
    \
@end \
@class __className; \
typedef NSComparisonResult (^__className##Comparator)(__className* obj1, __className* obj2); \
\
@interface NSEnumerator (__className##_NSEnumerator_Generics) <__className> \
- (__className*)nextObject; \
- (NSArray<__className>*)allObjects; \
@end \
\
@interface NSArray (__className##_NSArray_Generics) <__className> \
\
- (__className*)objectAtIndex:(NSUInteger)index; \
- (NSArray<__className>*)arrayByAddingObject:(__className*)anObject; \
- (NSArray*)arrayByAddingObjectsFromArray:(NSArray<__className>*)otherArray; \
- (BOOL)containsObject:(__className*)anObject; \
- (__className*)firstObjectCommonWithArray:(NSArray<__className>*)otherArray; \
- (NSUInteger)indexOfObject:(__className*)anObject; \
- (NSUInteger)indexOfObject:(__className*)anObject inRange:(NSRange)range; \
- (NSUInteger)indexOfObjectIdenticalTo:(__className*)anObject; \
- (NSUInteger)indexOfObjectIdenticalTo:(__className*)anObject inRange:(NSRange)range; \
- (BOOL)isEqualToArray:(NSArray<__className>*)otherArray; \
- (__className*)lastObject; \
- (NSEnumerator<__className>*)objectEnumerator; \
- (NSEnumerator<__className>*)reverseObjectEnumerator; \
- (NSArray<__className>*)sortedArrayUsingFunction:(NSInteger (*)(__className*, __className*, void *))comparator context:(void *)context; \
- (NSArray<__className>*)sortedArrayUsingFunction:(NSInteger (*)(__className*, __className*, void *))comparator context:(void *)context hint:(NSData *)hint; \
- (NSArray<__className>*)sortedArrayUsingSelector:(SEL)comparator; \
- (NSArray<__className>*)subarrayWithRange:(NSRange)range; \
- (NSArray<__className>*)objectsAtIndexes:(NSIndexSet *)indexes; \
- (__className*)objectAtIndexedSubscript:(NSUInteger)idx NS_AVAILABLE(10_8, 6_0); \
\
+ (NSArray<__className>*)array; \
+ (NSArray<__className>*)arrayWithObject:(__className*)anObject; \
+ (NSArray<__className>*)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; \
+ (NSArray<__className>*)arrayWithObjects:(__className*)firstObj, ... NS_REQUIRES_NIL_TERMINATION; \
+ (NSArray<__className>*)arrayWithArray:(NSArray<__className>*)array; \
\
- (NSArray<__className>*)initWithObjects:(const id [])objects count:(NSUInteger)cnt; \
- (NSArray<__className>*)initWithObjects:(id)