小编Cla*_*dio的帖子

有谁知道如何使IPhone/IPad模拟器脱机？

问候!

我正在尝试实现类似于a Touch Up Inside的触摸事件UIButton.我看过一些代码使用touchesBegan:withEvent但看起来我需要在屏幕上滑动一下手指.我其实只想触摸图像

码:

- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {   
    NSLog(@"Image touched!");
}

问候!

有人知道如何在Visual Studio 2010中自动缩进XAML文件吗？

Hy伙计们,

我正在尝试使用ICSharpCode.SharpZipLib库生成一个Zip文件,但它抛出了一个非常奇怪的错误.

码:

public static void ZipFiles(string inputFolderPath, string outputPathAndFile, string password)       
{
        ArrayList ar = GenerateFileList(inputFolderPath); // generate file list
        int TrimLength = (Directory.GetParent(inputFolderPath)).ToString().Length;

        TrimLength += 1; //remove '\'
        FileStream ostream;
        byte[] obuffer;

        ZipOutputStream oZipStream = new ZipOutputStream(File.Create(outputPathAndFile)); // create zip stream
        if (password != null && password != String.Empty)
            oZipStream.Password = password;
        oZipStream.SetLevel(9); // maximum compression
        ZipEntry oZipEntry;
        foreach (string Fil in ar) // for each file, generate a zipentry
        {
            oZipEntry = new ZipEntry(Fil.Remove(0, TrimLength));
            oZipStream.PutNextEntry(oZipEntry);

            if …

我一直在寻找两者之间的差异(通常用于使用HTTP/HTTPS的简单请求),但我找不到任何东西.有什么区别吗？我问它,因为当我需要,我只是使用NSURLConnection的,我已经看到了很多人建议使用AFNetworking(基于CFNetwork的).

问候!

我的应用程序中有一个嵌入式数据库,它具有一些感兴趣点的纬度和经度,我需要知道我与这些点的距离(使用GPS获取我的位置).我的问题是:我刚刚发现SQLite无法使用我的查询计算距离,因为它不计算三角函数(SIN,COS ...).我试图避免使用此查询以编程方式计算这些距离:

NSLog(@"SELECT ((ACOS(SIN(%@ * PI() / 180) * SIN(lat * PI() / 180) + COS(%@ * PI() / 180) * COS(lat * PI() / 180) * COS((%@ – lon) * PI() / 180)) * 180 / PI()) * 60 * 1.1515) AS `distance` FROM `members` HAVING `distance`<=’1000? ORDER BY `distance`", Latitude,Latitude, Longitude);

有人有解决方案吗？

问候!

我有一个.xlsx文件,我打开这个代码:

import pandas as pd

df = pd.read_excel(open('file.xlsx','rb'))
df['Description'].head

我有以下结果,看起来很不错.

ID     | Description
:----- | :-----------------------------
0      | Some Description with no hash
1      | Text with #one hash
2      | Text with #two #hashes

现在我想创建一个新列,只保留以#开头的单词,如下所示:

ID     | Description                      |  Only_Hash
:----- | :-----------------------------   |  :-----------------
0      | Some Description with no hash    |   Nan
1      | Text with #one hash              |   #one
2      | Text with #two #hashes           |   #two #hashes

我能用#计算/分隔线:

descriptionWithHash = df['Description'].str.contains('#').sum()

但现在我想像上面描述的那样创建列.最简单的方法是什么？

问候!

PS:它应该在问题中显示表格格式,但我无法弄清楚它为什么显示错误!

在某些情况下,我需要在1天内增加一个NSDate.对于它,我使用dateByAddingTimeInterval,但它不起作用.

这是代码:

NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"dd/MM/yyyy HH:mm"];
NSString *startDate = [NSString stringWithFormat:@"%@/2012 %@",dayString, begin];
NSString *endStringForDate = [NSString stringWithFormat:@"%@/2012 %@",dayString, end];

NSLog(@"Csantos: event starts: %@, event ends: %@", startDate, endStringForDate);

NSDate *beginDate = [dateFormat dateFromString:startDate];
NSDate *endDate = [dateFormat dateFromString:endStringForDate];

NSComparisonResult result = [beginDate compare:endDate];


if(result == NSOrderedDescending){
    NSTimeInterval dayinseconds = 24 * 60 * 60;

    [endDate dateByAddingTimeInterval:dayinseconds];
    NSLog(@"Csantos: event ends: %@", endDate);
}

结果:

2012-01-24 12:09:47.837 app[3689:207] Csantos: event starts: 19/02/2012 23:00, event ends: 19/02/2012 …

我正在尝试设置UIDatePicker的日期,但我每个月都是"1月"(01).我尝试使用"MM"和"LL",但两者都不起作用.

我的代码:

-(void)viewDidLoad {    
    [super viewDidLoad];

    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];

    [dateFormat setDateFormat:@"YYYY-MM-DD"];;
    NSDate *anyDate = [dateFormat dateFromString:@"2019-09-11"];   
    [datePicker setDate:anyDate];

    [dateFormat release];

}

提前致谢,

克劳迪奥

我正在尝试使用此代码在数据库上插入一些数据:

-(void)insertLocationOnDatabase:(LocationType *)aLocation {
    sqlite3_stmt *stmt;
    int location = [aLocation.locationID intValue];
    NSLog(@"Location ID: %i", location);
    const char *sql = "insert into tbl_location values (?,?,?,?)";
    if (sqlite3_prepare_v2(database, sql, -1, &stmt, NULL) == SQLITE_OK) {
        sqlite3_bind_int(stmt, 0, location);
        sqlite3_bind_text(stmt, 1, [aLocation.Description UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(stmt, 2, [aLocation.isActive UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(stmt, 3, [aLocation.sequenceOrder UTF8String], -1, SQLITE_TRANSIENT);
        if (sqlite3_step(stmt) == SQLITE_DONE) {
            NSLog(@"Location %@ inserted on database",aLocation.Description);
        }
        else {
            NSLog(@"Error on step: %i",sqlite3_errcode(database));
            }
    }
    else {
        NSLog(@"Error on prepare: %i",sqlite3_errcode(database));
    } …