hanfengs

早上地铁的时间就看了这一篇文章《方舟编译器的荣光和使命》，总结一下：

安卓的四大问题

1；java虚拟机+编译器+解释器，应用安装或者空闲编译，在手机上生成二进制的机器码

2；额外的JNI开销，用于和C/C++代码交互，

3；代码优化空间有限，为了防止生态过于碎片化，为第三方开放了简单的优化

hanfengs

UIButton category

-----------------------------------------.h
// 定义一个枚举（包含了四种类型的button）
typedef NS_ENUM(NSUInteger, GLButtonEdgeInsetsStyle) {
    GLButtonEdgeInsetsStyleTop, // image在上，label在下
    GLButtonEdgeInsetsStyleLeft, // image在左，label在右
    GLButtonEdgeInsetsStyleBottom, // image在下，label在上
    GLButtonEdgeInsetsStyleRight // image在右，label在左
};

hanfengs

#import <CommonCrypto/CommonDigest.h>
#import <CommonCrypto/CommonHMAC.h>
#import "NSString+Hash.h"

	NSString *username  = @"quxueabc";
    NSString *accessKey = @"k3on19kusewub1swa2u";
    NSString *secretKey = @"3z1nhvcngrdk8xlrnor";
    
    NSDateFormatter *df = [[NSDateFormatter alloc] init];
    df.locale = [NSLocale localeWithLocaleIdentifier:@"en-us"];

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        UIImageView *lastIV = nil;
        self.ivArrM = [NSMutableArray array];
        for (NSInteger i = 0; i < 4; i++) {
            UIImageView *iv = [[UIImageView alloc] init];
            [self addSubview:iv];
            [iv mas_makeConstraints:^(MASConstraintMaker *make) {
                if (isPad) {
                    make.width.mas_equalTo(163);
                }else{
                    make.width.equalTo(self).multipliedBy(0.5).offset(-IVMragin16 * 1.5);

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//1.开辟新的内存空间
    NSArray *originalArr = @[@1, @2, @3, @1, @3];
    NSMutableArray *resultArrM = [NSMutableArray array];

    for (NSString *item in originalArr) {
        if (![resultArrM containsObject:item]) {
          [resultArrM addObject:item];
        }
    }

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+(void)writefile:(NSString *)string fileName:(NSString *)fileName{
    
    NSLog(@"fileName==%@",fileName);
    NSArray *paths  = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *homePath = [paths objectAtIndex:0];
    NSString *filePath = [homePath stringByAppendingPathComponent:fileName];
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    //如果不存在
    if(![fileManager fileExistsAtPath:filePath]){

hanfengs

- (void)SRWebSocketDidOpen {
    NSLog(@"开启成功");
    //在成功后需要做的操作。。。
    
    NSDictionary *dict = @{
                          @"ref_text": @"sunny",
                          @"audio_format": @{
                                  @"type": @"WAV",
                                  @"audio_channel": @(1),
                                  @"sample_rate": @(16000)

hanfengs

https://ioscaff.com/articles/262?order_by=created_at&

	//WebImage 框架为 NSData 实现了个分类来判断二进制文件图片格式

+ (SDImageFormat)sd_imageFormatForImageData:(nullable NSData *)data {
    if (!data) {
        return SDImageFormatUndefined;
    }

    // File signatures table: http://www.garykessler.net/library/file_sigs.html

hanfengs

    TSStemLabel *stem = [[TSStemLabel alloc] init];
    stem.numberOfLines = 0;
    stem.text = @" $$CCTV$$ reported that every year Chinese people throw away a lot of food. Luckily, a number of people have realized the importance of saving food. {Last November}, Li Hong, a waitress in a restaurant in $$Nanjing$$, lost her job because she took some leftover food home for her son. Many people stood by her side.@What should we do in our daily life to waste less food? Here are two tips:@1. Don’t order too much food. If you can’t eat all the food you order, take the rest of it home.@2. Don’t keep too much food at home, especially for {vegetables} and fruit.In my opinion, everybody must save food.";
    CGFloat height = stem.stemHeight;
    [self addSubview:stem];
    [stem mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self).offset(LRMragin);
        make.right.equalTo(self).offset(-LRMragin);
        make.height.mas_equalTo(height);
        make.top.equalTo(self).offset(35);

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.h文件中

@interface DemoModel : NSObject<NSCopying,NSMutableCopying>

@property (nonatomic,assign) NSInteger age;

@property (nonatomic,  copy) NSString * name;

.m文件中 实现copyWithZone mutableCopyWithZone 方法