代码片段
Xcode的代码片段(Code Snippets)创建自定义的代码片段，当你重用这些代码片段时，会给你带来很大的方便。
常用代码块
1.copy:
@property (nonatomic,copy) NSString *<#boy_string#>;
2.strong:
@property (nonatomic,strong) <#Class#> *<#boy_object#>;
3.weak:
@property (nonatomic,weak) <#Class#> *<#boy_object#>;
4.assign:
@property (nonatomic,assign) <#Class#> <#boy_property#>;
5.delegate:
@property (nonatomic,weak) id<<#protocol#>> <#boy_delegate#>;
6.block:
@property (nonatomic,copy) <#Block#> <#boy_block#>;
7.mark:
#pragma mark <#boy_mark#>
8.warning:
#warning <#boy_warning#>
9.ReUseCell:
static NSString *rid=<#rid#>;
<#Class#> *cell=[tableView dequeueReusableCellWithIdentifier:rid];
if(cell==nil){
cell=[[<#Class#> alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:rid];
}
return cell;
11.initObj:
if(self=[super init]){
<#init#>
}
return self;
12.dataFill:
-(void)dataFill:(<#ModelClass#> *)<#model#>{
<#code#>
}
13.MainGCD:
dispatch_async(dispatch_get_main_queue(), ^{
<#code#>
});
14.GlobalGCD:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
<#code#>
});
15.AfterGCD:
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(<#delayInSeconds#> * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
<#code to be executed after a specified delay#>
});
16.OnceGCD:
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
<#code to be executed once#>
});
