小编Ram*_*sel的帖子

我一直试图将两个NSDictionaries合并几个小时.搜索并发现我可以使用[NSMutableDictionary addEntriesFromDictionary:].

    NSDictionary *areaAttributes = [[area entity] attributesByName];
    NSDictionary *gpsAttributes = [[gps entity] attributesByName];

    NSMutableDictionary *areaAttributesM = [areaAttributes mutableCopy];
    NSMutableDictionary *gpsAttributesM = [gpsAttributes mutableCopy];

    NSMutableDictionary *combinedAttributes =  [areaAttributesM addEntriesFromDictionary:gpsAttributesM];

但我得到错误:

Initializing 'NSMutableDictionary *_strong' with an expression of incompatible type 'void'

所以这就是[areaAttributesM addEntriesFromDictionary:gpsAttributesM]回报void？我的理解是否正确？为什么它回归无效？

使用Solr 3.5.0并在我的schema.xml中,我使用以下内容标记句子的结尾,并用符号标记替换结束标点符号:

<charFilter class="solr.PatternReplaceCharFilterFactory" 
pattern="(?<=[^.!?\\s][^.!?]*(?:[.!?](?![']?\s|$)[^.!?]*)*)[.!?]+(?=\\s|$)"
replacement=" monkeysentence"/>

我不确定这是否适用于我想要的东西,但首先我需要解决在第一个'？<='lookbehind中转义'<'字符的问题.

我收到以下错误:

org.xml.sax.SAXParseException: The value of attribute "pattern" 
associated with an element type "null" must not contain the '<' character.

我尝试使用'\',如下所示:

 pattern="(?\<=[^.!?\\s][^.!?]*(?:[.!?](?![']?\s|$)[^.!?]*)*)[.!?]+(?=\\s|$)"

但我得到了同样的错误.

bin/nutch solrindex命令中是否有参数指示索引到哪个Solr核心？

我已将Container View拖到我的一个View Controllers上.这附带了一个嵌入式塞格.跑步产生这个:

'Could not instantiate class named UIStoryboardEmbedSegueTemplate'

所以从其他几个stackoverflow问题看来,这似乎没有在iOS 5中实现.但是,这些问题没有提出修复.XCode不会让我使用任何其他类型的segue.

如果答案是创建自定义容器视图,我将继续使用它.在过去的几天里,我已经看到了很多代码.只是想知道是否有办法使用提供的Container View对象来做到这一点.

我正在尝试合并两个NSDictionaries:

NSDictionary *areaAttributes = [[area entity] attributesByName];
NSDictionary *gpsAttributes = [[gps entity] attributesByName];
NSMutableDictionary *combinedAttributes = [areaAttributes mutableCopy];
[combinedAttributes addEntriesFromDictionary:gpsAttributes];

但是得到以下错误:

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: 'The key 'latitude' is not defined for this NSKnownKeysDictionary'

latitude 是关键 gpsAttributes

这是我的viewcontroller.h文件:

#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
#import <CoreLocation/CoreLocation.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreMedia/CoreMedia.h>
#import <ImageIO/ImageIO.h>
#import <CoreVideo/CoreVideo.h>


@interface ViewController : UIViewController <UINavigationControllerDelegate,  CLLocationManagerDelegate>

@property (nonatomic, strong) NSManagedObjectContext *managedObjectContext;
@property(nonatomic, weak) IBOutlet UIImageView *selectedImageView;
@property(nonatomic, retain) IBOutlet UIImageView *vImage;
@property(nonatomic, retain) AVCaptureStillImageOutput????? *stillImageOutput;

- (IBAction)photoFromAlbum;
- (IBAction)photoFromCamera;
- (IBAction)saveImageToAlbum;
- (IBAction)segueToChoosePhotoTypeViewController;

@end

这条线:

@property(nonatomic, retain) AVCaptureStillImageOutput????? *stillImageOutput;

正在产生以下问题:

Expected ; at end of declaration list.

Xcode没有将AVCaptureStillImageOutput识别为类,因为它仍然是黑色并且不建议将其作为类型,并且"Fix-it"想要;在AVCaptureStillImageOutput之后插入右侧.

但是,如果我尝试使用声明AVCaptureStillImageOutput作为我的viewController.m文件的viewDidLoad中的类型,它会识别它并允许它作为类型.此外,其余的AVFoundation类在那里的代码中被识别.

框架就在那里,我只是对这个@property声明有一个问题.

我有一个包含大量条目的JSON文件,如下所示:

    {
    "area1": "California",
    "area2": "Sierra Eastside",
    "area3": "Bishop Area",
    "area4": "Volcanic Tablelands (Happy/Sad Boulders)",
    "area5": "Fish Slough Boulders",
    "grade": "V6 ",        
    "route": "The Orgasm",
    "type1": "Boulder",
    "type2": "NONE",
    "type3": "NONE",
    "type4": "NONE",
},

我想获取area和type条目并将它们转换为数组:

   {
    "area": ["California","Sierra Eastside","Bishop Area","Volcanic Tablelands (Happy/Sad Boulders)","Fish Slough Boulders"]
    "grade": "V6 ",        
    "route": "The Orgasm",
    "type": ["Boulder","NONE","NONE","NONE"]
},

我有这个代码几乎可以工作:

json_data=open('../json/routes_test.json')
datas = json.load(json_data)
datas_arrays = []
area_keys = ['area1','area2','area3','area4','area5']
type_keys = ['type1','type2','type3','type4']

for data in datas:
    areaArray = []
    typeArray …

我正在按照以下教程:http: //mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-server-setup/来设置带有ejabberd服务器的iOS应用程序.到目前为止,我已经将代码复制到一个新项目中.

我的问题是在手机上运行时没有调用XMPP委托函数AppDelegate.m.在Simulator中一切正常,并调用下面的两个函数.

  - (void)xmppStreamDidConnect:(XMPPStream *)sender {
    NSLog(@"in WSAppDelegate - xmppStreamDidConnect");
    isOpen = YES;
    NSError *error = nil;
    [[self xmppStream] authenticateWithPassword:password error:&error];

}

- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender {
    NSLog(@"in WSAppDelegate - xmppStreamDidAuthenticate");

    [self goOnline];

}

我可以在手机和模拟器上连接,因为此调用运行时没有错误:

[xmppStream connect:&error]

这是我的AppDelegate.h代码:

#import <UIKit/UIKit.h>
#import "XMPPRoster.h"
#import "XMPP.h"
#import "SMChatDelegate.h"
#import "SMMessageDelegate.h"

@class SMBuddyListViewController;

@interface WSAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
    SMBuddyListViewController *viewController;

    XMPPStream *xmppStream;
    XMPPRoster *xmppRoster;

    NSString *password;

    BOOL isOpen;
}

@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, …

我有一个Photo Class和一个Comments Class.我正在尝试实现一种搜索,用户可以在其中检索包含带有某些单词的评论的照片.我想到了几种方法,最简单的似乎是在Photo Class中包含一个Comments对象数组.

但是,我无法弄清楚如何查询此注释对象数组以查询其关键的"内容".

做类似于创建注释字符串数组本身的方法可行,但出于一致性的原因,我宁愿保存指向注释的指针.

这是我第一次使用dispatch_group_t，我犯了一个简单的错误。dispatch_group_notify在任何异步调用返回之前被调用，因此甚至在第一个调用之前被调用dispatch_group_leave(group)，然后抛出一个EXC_BAD_INSTRUCTION.

但是，我不知道为什么会发生这种情况。

dispatch_queue_t queue =      dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_group_t group = dispatch_group_create();

dispatch_group_async(group, queue, ^{
    [self getCategoriesMainWithParameters:nil withSuccess:^(NSArray *objects) {
        [categoriesMain addObjectsFromArray:objects];
        dispatch_group_leave(group);
    } failure:^(NSError *error) {
        groupError = error;
        dispatch_group_leave(group);
    }];
});

dispatch_group_async(group, queue, ^{
    [self getCategoriesSubWithParameters:nil withSuccess:^(NSArray *objects) {
        [categoriesSub addObjectsFromArray:objects];
        dispatch_group_leave(group);
    } failure:^(NSError *error) {
        groupError = error;
        dispatch_group_leave(group);
    }];
});

dispatch_group_async(group, queue, ^{
    [self getCategoriesProductWithParameters:nil withSuccess:^(NSArray *objects) {
        [categoriesProduct addObjectsFromArray:objects];
        dispatch_group_leave(group);
    } failure:^(NSError *error) {
        groupError = error;
        dispatch_group_leave(group); …