经常用 NSAssert 的同学会发现如下现象:通过 Xcode 创建工程会默认在 Release 模式关闭 NSAssert。...模式统一用 Configuration-Release 场景代替 本篇文章会简单介绍 Xcode 的内部工作方式,并提供一种让Xcode 在 Configuration-Release 场景 下 默认开启NSAssert...在 SDK 的头文件中,NSAssert 会通过宏判断 NS_BLOCK_ASSERTIONS 是否被定义。...如果定义不存在,会将 NSAssert 重写为真正的断言处理逻辑否则,会重写为空逻辑do {} while (0) ?...总结 本篇文章通过简单介绍 Xcode 的内部工作方式,并提供一种让Xcode 在 Configuration-Release 场景 下 默认开启NSAssert 的方案。
其实它使用了一个叫做NSAssert()的宏,这个宏用来断言,定义是这样的: #define NSAssert(condition, desc) 其中condition是要判断的条件,desc是条件为false...NSParameterAssert其实用到了这个宏,只是专门用来判断给方法传入的参数是否为空,如果为空就会抛出一个异常说参数不合法,就如它的定义一样: #define NSParameterAssert(condition) NSAssert
= SQLITE_OK) { sqlite3_close(db); NSAssert(NO, @"OPEN SQLITE DATABASE ERROR!")...NSAssert是断言函数,当断言失败时候打印信息。 NSAssert1是带有一个参数的NSAssert函数,此外还有NSAssert2等函数。 ...", fileName); if(sqlite3_open([fileName UTF8String], &db)) { sqlite3_close(db); NSAssert...= SQLITE_DONE) { NSAssert(0, @"INSERT DATABASE ERROR!")...= SQLITE_OK) { sqlite3_close(db); NSAssert(NO, @"OPEN DATABASE ERROR!")
NSAssert(strcmp(p1->key, "Bob")==0, @"oops!")...tsearch("Lucy", &root, bintreecompar); //查找 node_t *p = tfind("Lily", &root, bintreecompar); NSAssert...; p = tfind("Lucy", &root, bintreecompar); NSAssert(p != NULL, @"oops!")...; //删除 p = tdelete("Jone", &root, bintreecompar); NSAssert(p == NULL, @"oops!")...; p = tdelete("Lucy", &root, bintreecompar); NSAssert(p != NULL, @"oops!")
第一次查找没有找到 student_t *pstudent = lfind("Lily", students, &count, sizeof(student_t), &lfindcompar); NSAssert...count会加1 pstudent = lsearch(&newstudent, students, &count, sizeof(student_t), &lsearchcompar); NSAssert...pstudent = lfind("Lily", students, &count, sizeof(student_t), &lfindcompar); NSAssert(pstudent !...bsearch(&age, students, sizeof(students)/sizeof(student_t), sizeof(student_t), &bsearchcompar); NSAssert
NSAssert(AudioFormatGetPropertyInfo(kAudioFormatProperty_Encoders, sizeof(outAudioStreamBasicDescription.mFormatID...count = size / sizeof(AudioClassDescription); //取出所有的描述符 AudioClassDescription descriptions[count]; NSAssert...memcpy(&audioClassDescription, &descriptions[i], sizeof(audioClassDescription)); } } //创建软编码器 NSAssert...(sampleBuffer, NULL, &inAaudioBufferList, sizeof(inAaudioBufferList), NULL, NULL, 0, &blockBuffer); NSAssert...bufferSize; outAudioBufferList.mBuffers[0].mData = buffer; UInt32 ioOutputDataPacketSize = 1; //转码 NSAssert
if ([FMAccountUtils isAppLogin] || UDBool(kUserDefault_IsCasualLook) == YES){ NSAssert(1 == 2, @"NSAssert...test"); NSLog(@"NSAssert test",1); //断言崩溃 return; } 崩溃日志分析 crash文件文件: LuoJiFMIOS_2018-04-14-211457_...Information: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSAssert
二、NSAssert的断点和symbolic 断点 【问题表现】NSAssert是常见的断言,可以在debug阶段快速暴露问题,但是在触发的时候无法保持上下文; 【问题分析】NSAssert的本质就是抛出一个异常...如下,便可以NSAssert触发时捕获现场。 ? 同理,在Exception Breakpoint,还有Smybolic Breakpoint较为常用。
if ([attribute isKindOfClass:NSArray.class]) { ... } else { NSAssert...attribute, NSLayoutRelation relation) { if ([attribute isKindOfClass:NSArray.class]) { NSAssert...MASConstraint * (^)(MASLayoutPriority))priority { return ^id(MASLayoutPriority priority) { NSAssert...if ([attribute isKindOfClass:NSArray.class]) { ... } else { NSAssert...} else { _secondViewAttribute = secondViewAttribute; } } else { NSAssert
commonSuperview = view; } previousView = view; } } NSAssert...tailSpacing:(CGFloat)tailSpacing { if (self.count < 2) { NSAssert...views to distribute need to bigger than one"); return; } if (warpCount < 1) { NSAssert...tailSpacing { if (self.count < 1) { return self.copy; } if (warpCount < 1) { NSAssert
obj),而使用NSAssert断言来处理。NSAssert是系统定义的宏。 NSAssert(myView !
theClass, @selector(suspend), @selector(af_suspend)); } } - (NSURLSessionTaskState)state { NSAssert...in the actual dummy class"); return NSURLSessionTaskStateCanceling; } - (void)af_resume { NSAssert...postNotificationName:AFNSURLSessionTaskDidResumeNotification object:self]; } } - (void)af_suspend { NSAssert...正常处理原有逻辑的同时,多发送一个通知,以下是我们需要替换的新方法: //被替换掉的方法,只要有TASK开启或者暂停,都会执行 - (void)af_resume { NSAssert([self...postNotificationName:AFNSURLSessionTaskDidResumeNotification object:self]; } } - (void)af_suspend { NSAssert
在DTCameraPreviewController中添加以下viewDidLoad方法: - (void)viewDidLoad { [super viewDidLoad]; NSAssert...NSAssert([self.view isKindOfClass:[CWVideoPreviewView class]], @"Wrong root view class
; } - (MASConstraint *)addConstraintWithLayoutAttribute:(NSLayoutAttribute)layoutAttribute { NSAssert...NSLayoutRelation relation) { // if ([attribute isKindOfClass:NSArray.class]) { // NSAssert...shouldBeReplacedWithConstraint:compositeConstraint]; // return compositeConstraint; // } else { NSAssert...MASViewAttribute.class]) { _secondViewAttribute = secondViewAttribute; } else { NSAssert...= [self.firstViewAttribute.view mas_closestCommonSuperview:self.secondViewAttribute.view]; NSAssert
attribute, NSLayoutRelation relation) { if ([attribute isKindOfClass:NSArray.class]) { NSAssert...} else { _secondViewAttribute = secondViewAttribute; } } else { NSAssert...replacementConstraint { NSUInteger index = [self.childConstraints indexOfObject:constraint]; NSAssert...= [self.firstViewAttribute.view mas_closestCommonSuperview:self.secondViewAttribute.view]; NSAssert...MASViewAttribute.class]) { _secondViewAttribute = secondViewAttribute; } else { NSAssert
- (void)checkQCloudAppInfo { NSAssert([kQDAppId length] > 0, @"appid is not set"); NSAssert([...kQDSecretId length] > 0, @"secretId is not set"); NSAssert([kQDSecretKey length] > 0, @"secretKey
strcpy(ent.key, "Bob"); ENTRY *p1 = hsearch(ent, ENTER); NSAssert(strcmp(p1->key, "Bob...ENTRY *p2 = hsearch(ent, ENTER); //查找 ENTRY *p3 = hsearch(ent, FIND); NSAssert
CCTextureCache在多个方法中都有体现,以CCSprite类的初始化方法之一为例: -(id) initWithFile:(NSString*)filename rect:(CGRect)rect { NSAssert...initWithTexture的方法实现如下: -(id) initWithTexture:(CCTexture2D*)texture rect:(CGRect)rect { NSAssert
NSAssert() 和 NSCAssert()的使用 NSAssert()用于 OC 语法的断言 NSCAssert()用于 C语言语法的断言 2.
= SQLITE_OK) {// SQLITE_OK 打开成功 //失败 无论成功还是失败都要关闭数据库 sqlite3_close(db); NSAssert...= SQLITE_OK) { //失败 sqlite3_close(db); NSAssert(NO, @"建表失败!
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