ios开发小技巧

在开发中遇到的判空处理，或者 null转@"" 等操作，之前是通过内联函数放到头文件中去了，时间久了头文件会很庞大，于是新建了一个类，将所有判空整理到类中

#import 

/**
 * Tests if an object is an array which is not empty.
 */
BOOL MBIsArrayWithItems(id object);

/**
 * Tests if an object is a dic which is not empty.
 */
BOOL MBIsDicWithItems(id object);

/**
 * Tests if an object is a string which is not empty.
 */
BOOL MBIsStringWithAnyText(id object);
/**
 *  [NSNull null], nil, @"" to "".
 *  NSNumber to NSString.
 *  true -> @"1" | false -> @"0".
 */

//空转 @""  number类型转NSString类型
NSString* MBNonEmptyString(id obj);

/**
 *  [NSNull null], nil, @"" to "-".
 *  NSNumber to NSString.
 *  true -> @"1" | false -> @"0".
 */
//空转 @"-"  number类型转NSString类型
NSString* MBNonEmptyString_(id obj);

/**
 *  汉字转UTF8
 */

NSString* MBEncodingWithAllowedCharactersString(id obj);

BOOL MBJudgeVersionStringForNeedUpdate(NSString* clientVer, NSString* serviceVer);//判断本地版本和服务版本的大小，返回是否需要更新