随手笔记

命令行使用代理
export https_proxy=http://127.0.0.1:7890 http_proxy=http://127.0.0.1:7890 all_proxy=socks5://127.0.0.1:789

OC常用代码

[operation2 addDependency:operation1];表示operation1优先级更高
return obj1.integerValue > obj2.integerValue;表示从小到大

typedef void (^MJClassesEnumeration)(Class c, BOOL *stop);
- (void)setBlockWithString:(void(^)(NSString *string))string; 
@property (nonatomic , copy) void (^complectionBlock)();

int (^sumOfNumbers)(int a, int b) = ^(int a, int b) {
    return a + b;
};

typedef NS_ENUM(NSInteger,JHCircleViewStyle) {
    JHCircleViewStepsStyle,
    JHCircleViewSleepStyle
};
static const char MJObjectClassInArrayKey = '\0';
static const void *IntegerProperty = &IntegerProperty;

C语言知识

C数组输出枚举
    int systemAccessoryWidths[] = {
        [UITableViewCellAccessoryNone] = 0,
        [UITableViewCellAccessoryDisclosureIndicator] = 34,
        [UITableViewCellAccessoryDetailDisclosureButton] = 68,
        [UITableViewCellAccessoryCheckmark] = 40,
        [UITableViewCellAccessoryDetailButton] = 48
    };
    
    NSLog(@"systemAccessoryWidths:%zd",systemAccessoryWidths[UITableViewCellAccessoryCheckmark]);

十六进制转有符号十进制
    
    Byte byte[20] = {0x40,0x81,0x20,0xfe,0x00,0x1f,0x08,0x00};
    
    for (int i = 0; i < 10; i++) {
        char c = byte[i];
        printf("%d \n",c);
    }

加快XCode编译速度（其中N表示命令行返回的参数，一般为1）
//16G
hdid -nomount ram://33554432
newfs_hfs -v DerivedData /dev/rdiskN
diskutil mount -mountPoint ~/Library/Developer/Xcode/DerivedData /dev/diskN

    <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>

命令行

举例说明：
设定2012年9月3日23:15分关机：sudo shutdown -h 1209032315
设定2012年9月3日23:15分重启：sudo shutdown -r 1209032315
设定2012年9月3日23:15分睡眠：sudo shutdown -s 1209032315
删除所有txt后缀的文件：find . -name "*.txt"  | xargs rm -f

Git相关

pod install --verbose --no-repo-update
git clean -xfd
//在用上述 git clean 前，墙裂建议加上 -n 参数来先看看会删掉哪些文件，防止重要文件被误删
git clean -nxfd

新建仓库
mMac:AP0070 humingmin$ git remote remove origin 或者git init
mMac:AP0070 humingmin$ git remote add origin http://192.168.0.10:3000/smartmovt_iOS/AP0070.git
mMac:AP0070 humingmin$ git push origin master 或者git push -u origin master -f

代码块

/**
 <#(nullable NSString *)#>
 */

 /*<#(nullable NSString *)#>*/

#define WeakObj(o) __weak typeof(o) weak##o = o

@property (nonatomic, weak) <#CGFloat x#> *<#CGFloat x#>;

@property (nonatomic, strong) <#CGFloat x#> *<#CGFloat x#>;

@property (nonatomic, copy) <#CGFloat x#> <#CGFloat x#>;

@property (nonatomic, assign) <#CGFloat x#> <#CGFloat x#>;

#warning <#key#>---------------------------------

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
}

    [UIColor colorWithRed:arc4random_uniform(255)/255.0 green:arc4random_uniform(255)/255.0 blue:arc4random_uniform(255)/255.0 alpha:1];

#pragma mark <#arguments#> ------------------------------

- (void)layoutSubviews {
    [super layoutSubviews];
    
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        <#statements#>
    }
    return self;
}

- (instancetype)init {
    if (self = [super init]) {
        <#statements#>
    }
    return self;
}

        UIView * view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, <#CGFloat width#>, <#CGFloat height#>)];
        view.center = CGPointMake(<#CGFloat x#>, <#CGFloat y#>);
        view.backgroundColor = [UIColor cyanColor];
        [self addSubview:view];

    UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(<#CGFloat x#>, <#CGFloat x#>, <#CGFloat x#>, <#CGFloat x#>)];
    textField.borderStyle = UITextBorderStyleNone;
    textField.font = [UIFont systemFontOfSize:<#CGFloat x#>];
    textField.textAlignment = NSTextAlignmentLeft;
    textField.adjustsFontSizeToFitWidth = YES;
    textField.backgroundColor = <#CGFloat x#>;
    textField.textColor = <#CGFloat x#>;
    textField.keyboardType = UIKeyboardTypeNumbersAndPunctuation;
    textField.placeholder = <#CGFloat x#>;
    [self.view addSubview:textField];
    //[textField setValue:SupportTextColor forKeyPath:@"_placeholderLabel.textColor"];
    //textField.delegate = self;

    self.window.backgroundColor = [UIColor whiteColor];
    self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[NSClassFromString(@"<#NSString * _Nonnull aClassName#>") alloc]init]];

    ViewController * vc = [[ViewController alloc]init];
    UINavigationController * nav = [[UINavigationController alloc]initWithRootViewController:vc];
    self.window.rootViewController = nav;

UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, <#CGFloat width#>, <#CGFloat height#>)];
label.center = CGPointMake(<#CGFloat x#>, <#CGFloat y#>);
label.text = NSLocalizedString(<#key#>, nil);
label.textColor = [UIColor blackColor];
label.textAlignment = NSTextAlignmentCenter;
label.font = [UIFont systemFontOfSize:<#(CGFloat)#>];
[self.view addSubview:label];

UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, <#CGFloat width#>, <#CGFloat height#>)];
imageView.image = [UIImage imageNamed:@"<#CGFloat x#>"];
imageView.center = CGPointMake(<#CGFloat x#>, <#CGFloat y#>);
[self.view addSubview:imageView];

UIButton * button = [[UIButton alloc]initWithFrame:CGRectMake(<#CGFloat x#>, <#CGFloat y#>, <#CGFloat width#>, <#CGFloat height#>)];
[button setTitle: NSLocalizedString(<#key#>, nil) forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button addTarget:self action:@selector(<#click#>) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];

extern NSString * const <#key#>;

NSString *const <#key#> = @"<#key#>";

- (void)click {
    
}

用命令行查找某段代码
grep -i "prefs:root=" . -r -n