iOS Development Tips-using macro-simplified code

In iOS development, the dictionary-to-model is generally as follows:

1 /**2 * Declaration Method3  */4-(Instancetype) Initwithdictionary: (Nsdictionary *) dict;5+ (Instancetype) carwithdictionary: (Nsdictionary *) dict;6 7 /**8 * Implementation Method9  */Ten-(Instancetype) Initwithdictionary: (Nsdictionary *) Dict One { A     if(self =[Super Init]) { - [self setvaluesforkeyswithdictionary:dict]; -     } the     returnSelf ; - } -  -+ (Instancetype) carwithdictionary: (Nsdictionary *) Dict + { -     return[[Zycar alloc]initwithdictionary:dict]; +}

Declared in the header file before the. m

File to implement specific methods, and the content of these methods are basically consistent, can be simplified with macros.

2. Create a new. h file and add the following code to it:

1 #defineInith (name)2-(Instancetype) Initwithdict: (Nsdictionary *) Dict; 3+ (instancetype) name# #WithDict:(nsdictionary *) dict;4 5 #defineINITM (name)6-(Instancetype) Initwithdict: (Nsdictionary *) Dict7 { 8     if(self =[Super Init]) { 9 [self setvaluesforkeyswithdictionary:dict];Ten     }  One     returnSelf ; A }  -+ (instancetype) name# #WithDict:(nsdictionary *) Dict - {  the     return[[Self alloc] initwithdict:dict]; - } -  - #endif

After quoting this. h file, the Declaration and implementation of the above method can be reduced to a sentence

Inith (name); Initm (name); Name is the model class name