1.链式编程思想：方法的返回值是block必须有返回值(本身对象)，block参数(需要操作的值)
#import "ViewController.h"
具体计算放在Calculation类中的block进行，返回对象本身
int result = [NSObject mas_makeCalculate:^(Calculation *cal) {
// [[[cal add:5]add:3]add:9];正常编程思想
cal.add(3).add(5).add(5);
}];
NSLog(@"%d",result);
#import "NSObject+CalculateMenager.h"
+(int)mas_makeCalculate:(void (^)(Calculation *))block
{
Calculation *cal = [[Calculation alloc]init];
block(cal);
return cal.result;
}
#import "Calculation.h"
-(Calculation* (^)(int))add
{
return ^(int value){
self.result += value;
return self;
};
}
2.函数式编程思想
#import "CalculateMenage.h"
-(instancetype)calculate:(int (^)(int))calculateBlock
{
_result = calculateBlock(_result);
return self;
}
#import "ViewController.m"
#import "CalculateMenage.h"
@interface ViewController ()
@end
@implementation ViewController
-(void)viewDidLoad {
[super viewDidLoad];
CalculateMenage *menager = [[CalculateMenage alloc]init];
int result = [[menager calculate:^int(int result) {
result += 5;
result += 5;
return result;
}]result];
NSLog(@"%d",result);
}
