Generic UITableView/UICollectionView data source for objects in NSArray

ADVArrayDataSource.h

//
//  Copyright © 2013 Yuri Kotov
//

#import <Foundation/Foundation.h>
#import "ADVIndexedSubscripting.h"

typedef void(^ADVCellConfigurationBlock)(id cell, id object);

@interface ADVArrayDataSource : NSObject <ADVIndexedSubscripting, UITableViewDataSource, UICollectionViewDataSource>

@property (readonly, nonatomic) NSArray *array;

- (instancetype) initWithArray:(NSArray *)array
        reusableCellIdentifier:(NSString *)identifier
        cellConfigurationBlock:(ADVCellConfigurationBlock)block;

@end

ADVArrayDataSource.m

//
//  Copyright © 2013 Yuri Kotov
//

#import "ADVArrayDataSource.h"

@interface ADVArrayDataSource ()
@property (readonly, nonatomic) NSString *cellIdentifier;
@property (readonly, nonatomic) ADVCellConfigurationBlock configurationBlock;
@end

@implementation ADVArrayDataSource
{
    NSMutableArray *_array;
}

#pragma mark - ADVArrayDataSource
- (instancetype) initWithArray:(NSArray *)array
        reusableCellIdentifier:(NSString *)identifier
        cellConfigurationBlock:(ADVCellConfigurationBlock)block
{
    if ((self = [super init]))
    {
        _configurationBlock = block;
        _cellIdentifier = identifier;
        _array = [array mutableCopy];
    }
    return self;
}

- (NSInteger) numberOfItemsInSection:(NSInteger)section
{
    return self.array.count;
}

- (void) deleteObjectAtIndexPath:(NSIndexPath *)indexPath
{
    [_array removeObjectAtIndex:indexPath.row];
}

#pragma mark - ADVIndexedSubscripting
- (id) objectAtIndexedSubscript:(NSUInteger)index
{
    return self.array[index];
}

#pragma mark - UITableViewDataSource
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [self numberOfItemsInSection:section];
}

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:self.cellIdentifier forIndexPath:indexPath];
    self.configurationBlock(cell, self[indexPath.row]);
    return cell;
}

- (void) tableView:(UITableView *)tableView
commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
 forRowAtIndexPath:(NSIndexPath *)indexPath
{
    switch (editingStyle)
    {
        case UITableViewCellEditingStyleDelete:
            [self deleteObjectAtIndexPath:indexPath];
            break;
        default:
            break;
    }
}

#pragma mark - UICollectionViewDataSource
- (NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return [self numberOfItemsInSection:section];
}

- (UICollectionViewCell *) collectionView:(UICollectionView *)collectionView
                   cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:self.cellIdentifier
                                                                           forIndexPath:indexPath];
    self.configurationBlock(cell, self[indexPath.row]);
    return cell;
}

@end

ADVIndexedSubscripting.h

//
//  Copyright © 2013 Yuri Kotov
//

#import <Foundation/Foundation.h>

@protocol ADVIndexedSubscripting <NSObject>
- (id) objectAtIndexedSubscript:(NSUInteger)index;
@end