Notes on new syntax features of objective-C

Document directory

• Nsnumber Value assignment:
• Nsarray assignment and access:
• Nsdictionary assignment and access:

New syntax features of objective-C 1. Improvement of enumeration types

Previously, I declared that the enumeration method is based on the C ++ habit:

Typedef Enum {HUMAN, monkey, chiecken, cow} animals;

The new statement is as follows:

Typedef Enum animals: nsuinteger {HUMAN, monkey, cow} animals;

Enum can be bound to the data type.

2. nsnumber assignment in simplified Syntax:

Nsnumber * value; value = @ 12345; value = @ Yes; value = @ 3.14f;

Nsarray assignment and access:

Nsarray * array; array = @ {1, 2, 3}; array = @ {A}; array [I] = 23;

Nsdictionary assignment and access:

Nsdictionary * dict;
Dict =@{ key1: obj1, key2: obj2 };
Dict = @{};
Dict [key1] = obj3;

Summary

Although, it's just some simple syntactic sugar. But it makes objective-C easier to use. That is, how does one feel more and more like C #/Java?