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block-in-the-development's Introduction

Block在开发中的使用

#####基本定义:

  • 1.匿名函数,帮你保存一份代码,等到恰当的时候再去调用
  • 2.类似于函数指针
    void func(int count){
    ETBCLogGreen("0.函数指针 --> count = %d",count);
    
    //函数指针
    void(*funcptr)(int) = &func;
    funcptr(520);
}

  • 3.block语法
 ^void(){
 ETBCLogRed(@"allydata");
 };

  • 4.Block类型的变量
 block.noReturnNoPar void(^noReturnNoPar)();

  • 5.对比函数指针
 void(*funcptr)() = &func;

  • 6.补充
源代码中一旦使用了Block语法就相当于生成了可赋值给Block类型变量的“值”,Blocks中由Block语法生成的值也成为“Block”,在有关Blocks的文档中,“Block”既指源代码中的Block语法,也指由Block语法所生成的值。

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