小编X S*_*ash的帖子

例如,对于原始,我会这样做

if ( (x >= 6000) && (x <= 20000) )
    // do something here 

并且使用NSDecimalNumber,这就是我所拥有的

if ( (([x compare:[NSNumber numberWithInt:6000]] == NSOrderedSame) || 
        ([x compare:[NSNumber numberWithInt:6000]] == NSOrderedDescending))
    && (([x compare:[NSNumber numberWithInt:20000]] == NSOrderedSame) || 
        ([x compare:[NSNumber numberWithInt:6000]] == NSOrderedAscending)) )
{
    // do something here
}

这种比较还有其他方法(更简单,更优雅)吗？如果我将值转换为原始,我使用什么原语？我不想使用CGFloat,float或double,因为我在这里处理货币.或者如果我将它们转换为上面提到的那些,有人可以验证/解释精度吗？

当用户单击textField时,我正在使用带有弹出窗口的DatePicker.但是,Picker首先显示Month,而不是首先显示日期,并且不是英国人写日期的方式.有没有办法将DatePicker中的日期格式设置为英国方式,如dd/mm/yyyy？我正在使用Achtionsheet:

-(IBAction)acsheet:(id)sender
{

    actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                              delegate:nil
                                     cancelButtonTitle:nil
                                destructiveButtonTitle:nil
                                     otherButtonTitles:nil];
    [actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    //CGRect pickerFrame = CGRectMake(0, 45, 0, 0);
    pickerView1 = [[UIDatePicker alloc] init];
    pickerView1.datePickerMode = UIDatePickerModeDate;  

    [actionSheet addSubview:pickerView1];

    UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
    closeButton.momentary = YES; 
    closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
    closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
    closeButton.tintColor = [UIColor blackColor];
    [closeButton addTarget:self action:@selector(dismissActionSheet:)                    
                      forControlEvents:UIControlEventValueChanged];
    [actionSheet addSubview:closeButton];
    [actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];    
    [actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

    [pickerView1 addTarget:self
                    action:@selector(updateLabel:)
          forControlEvents:UIControlEventValueChanged]; 

    UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil …

是否可以使用curl_multi记录每个进程的响应时间？这是我当前使用的代码，我只是不确定如何记录每个进程的响应时间。谢谢你的帮助！

do 
{
    $execReturnValue = curl_multi_exec($mh, $runningHandles);
} while ($execReturnValue == CURLM_CALL_MULTI_PERFORM);

// Loop and continue processing the request
while ($runningHandles && $execReturnValue == CURLM_OK) 
{
    // Wait forever for network
    $numberReady = curl_multi_select($mh);
    if ($numberReady != -1) 
    {
        // Pull in any new data, or at least handle timeouts
        do     
        {
            $execReturnValue = curl_multi_exec($mh, $runningHandles);
        } while ($execReturnValue == CURLM_CALL_MULTI_PERFORM);
    }
}       
//End Run
//Get Data and Close
foreach($ping as $cid=>$p)
{
    $curlError = curl_error($c[$cid]);
    if($curlError == "") 
    { …

我有.db文件的问题,复制到Documents目录后获得0 KB的大小,而原始文件是137KB.我试图在SQLite Manager中打开我复制的文件.它打开,不抱怨文件损坏......它只是不包含单个表.

我复制文件的代码:

- (void) createEditableDatabase
{
    BOOL success; 
    NSFileManager *fileManager = [NSFileManager defaultManager]; 
    NSError *error;
    NSString *writableDB = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"yc_ch.db"];
    success = [fileManager fileExistsAtPath:writableDB];
    if (success)
    {
        return;
    }
    NSString *defaultPath = [[NSBundle mainBundle] pathForResource:@"yc_ch" ofType:@"db"];
    error = nil;
    success = [fileManager copyItemAtPath:defaultPath toPath:writableDB error:&error];
    if (!success) 
    {
        NSAssert1(0, @"Failed to create writable database file:%@", [error localizedDescription]);
    }
}

检查文件是否存在,如果不是副本.检查发生在RootViewController中

- (void)viewDidLoad
{
    self.subCountriesArr=[[NSMutableArray alloc]initWithCapacity:1];
    NSMutableArray *subCountriesTemp=[[[NSMutableArray alloc]init]autorelease];

    DBAccess *dbAccess=[[DBAccess alloc]init];
    [dbAccess createEditableDatabase]; //method to copy file …

请求方法:GET请求URL:http://127.0.0.1: 8000 /注册 Django版本:1.3.1异常类型:TypeError异常值:

__init__() 有一个意外的关键字参数 'null'

异常位置:/usr/local/lib/python2.7/dist-packages/django/forms/fields.py in init,第196行Python可执行文件:/ usr/bin/python Python版本:2.7.2 Python路径:

['/ home/forent/myprograms/mysite7','/ usr/local/lib/python2.7/dad-package /oauth2-1.5.211-py2.7.egg','/ usr/local/lib/python2 .7/dist-packages','/ usr/local/lib/python2.7/did-package/python_twitter-0.8.2-py2.7.egg','/ usr/local/lib/python2.7/rem -packages/ipython-0.12-py2.7.egg','/ usr/lib/python2.7','/ usr/lib/python2.7/plat-linux2','/ usr/lib/python2.7/lib-tk','/ usr/lib/python2.7/lib-old','/ usr/lib/python2.7/lib-dynload','/ usr/local/lib/python2.7/dad -packages ','/ usr/lib/python2.7/did-package','/ usr/lib/python2.7/did-package/PIL','/ usr/lib/python2.7/did-package/glst- 0.10','/ usr/lib/python2.7 /dist-packages/gtk-2.0','/ usr/lib/pymodules/python2.7','/ usr/lib/python2.7 /dist-package /ubuntu -sso-client','/ usr/lib/python2.7/dad-packages /ubuntuone-client','/ usr/lib/python2.7/dad-package /ubuntuone-control-panel','/ usr/lib/python2.7/dist-packages/ubuntuone-couch','/ usr/lib/python2.7/did-package /ubuntuone-installer'','/ usr/lib/python2.7/record-packages /ubuntuone-存储-PR otocol']

服务器时间:2012年1月27日星期五11:11:22 -0600

#

view

from django.shortcuts import render_to_response
from registration.models import UserDetails
from forms import UserForm
from django.template import RequestContext
from django.http import HttpResponseRedirect …