NSArray+Functional.h

//  Copyright (c) 2010, Josh Weinberg
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are met:
//  * Redistributions of source code must retain the above copyright
//  notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//  notice, this list of conditions and the following disclaimer in the
//  documentation and/or other materials provided with the distribution.
//  * Neither the name of the <organization> nor the
//  names of its contributors may be used to endorse or promote products
//  derived from this software without specific prior written permission.
//
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#import <Foundation/Foundation.h>


@interface NSArray (Functional)

- (NSArray*)filter:(id(^)(id))block; //Block is id => BOOL
- (NSArray*)map:(id(^)(id))block; //Block is id => id
- (id)foldLeft:(id)start withBlock:(id(^)(id,id))block; //Block is (id,id) => id
- (id)foldRight:(id)start withBlock:(id(^)(id,id))block; //Block is (id,id) => id
- (id)reduceLeft:(id(^)(id,id))block; //Block is (id,id) => id
- (id)reduceRight:(id(^)(id,id))block; //Block is (id,id) => id
- (BOOL)forall:(id(^)(id))block; //Block is id => BOOL

@end