cell

Why UICollectionView's UICollectionViewCell is not highlighting on user touch?

匿名 (未验证) 提交于 2019-12-03 02:47:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I have a UICollectionView that is made up of a custom UICollectionViewCell subclass. The cell's are displaying correctly and are responding correctly to user's touches by firing this method: - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath However, I am of the understanding that when a user touches the cell, it should highlight (in blue) and then the highlight should go away when the user lifts their finger. This is not happening. Any thoughts on why? Here is some relevant code: In

Sudoku generator algorithm

匿名 (未验证) 提交于 2019-12-03 02:47:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I made an algorithm to generate sudokus, but it was terribly inefficient. Each puzzle took minutes to generate. So now I am trying to write it again in optimal way. But I am experiencing some problems I need help with. There are two aproaches, start with blank grid and add numbers, then check if it is solvable. Second approach is to create full valid grid with all 81 numbers and then remove until we are happy with number of remaining numbers and it is still solvable. First I used first approach but now I am going to use second because I

What's an efficient implementation of Conway's Game of Life for low memory uses?

匿名 (未验证) 提交于 2019-12-03 02:47:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I'm looking for a fast and memory efficient approach for implementing Conway's Game of Life. Constraints: a 96x128 board, approximately 2kB RAM available and 52MHz processor (see the tech specs here: http://www.getinpulse.com/features ). My current naive solution that represents each cell as a single bit in a matrix (96*128/8=1,536 bytes) works but is too slow. What tricks can be used to improve performance? Storing the coordinates of live cells (for example in this implementation http://dotat.at/prog/life/life.html ) would use too much

UITableViewAutomaticDimension not working until scroll

匿名 (未验证) 提交于 2019-12-03 02:46:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: When the Table View is first loaded, all of the visible cells are the estimatedRowHeight. As I scroll down, the cells are being automatically sized properly, and when I scroll back up the cells that were initially estimatedRowHeight are being automatically sized properly. Once the cells are being automatically sized, they don't ever seem to go back to being the estimatedRowHeight. override func viewDidLoad() { super.viewDidLoad() self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil) self

How can IOS Photos app can show hundreds of photos in one screen?

匿名 (未验证) 提交于 2019-12-03 02:45:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am working on an application that relies on showing lots of photos on screen from multiple sources. I am wondering how could apple make that "photo tile" view in their photo app? With that much photos, in my opinion the app should give memory warning with less photos (even if i load photos in "thumbnail size") displayed at once, but i can see that it can show hundreds of photos in one screen when i zoom out. One way i can think of is these views are not individual photos but they are single 'tiled' images generated from photos on real time

how to convert a cell to string in matlab

匿名 (未验证) 提交于 2019-12-03 02:45:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Suppose I have a cell v = 'v' [576.5818] [3.0286] [576.9270] 'v' [576.5953] [3.1180] [576.8716] 'f' [ 56] [ 58] [ 52] 'f' [ 56] [ 58] [ 52] and I want to convert this to a cell array using a format string for each element: ' %.5f' How can I do this? I tried the following approach, but I get an error: f1 = @(x) sprintf(' %.5f',x); cellfun(f1, num2cell(v),'UniformOutput', false) I am getting an error as ??? Error using ==> sprintf Function is not defined for 'cell' inputs. Error in ==> @(x)sprintf(' %.5f',x) Can any one help me thanks in

Using Tensorflow's Connectionist Temporal Classification (CTC) implementation

匿名 (未验证) 提交于 2019-12-03 02:45:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I'm trying to use the Tensorflow's CTC implementation under contrib package (tf.contrib.ctc.ctc_loss) without success. First of all, anyone know where can I read a good step-by-step tutorial? Tensorflow's documentation is very poor on this topic. Do I have to provide to ctc_loss the labels with the blank label interleaved or not? I could not be able to overfit my network even using a train dataset of length 1 over 200 epochs. :( How can I calculate the label error rate using tf.edit_distance? Here is my code: with graph.as_default(): max

UICollectionView - Downloading images and effective reloading of data, like Instagram

匿名 (未验证) 提交于 2019-12-03 02:45:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I noticed that apps like Intagram uses UICollectionViews to display the feed of photos. I also noticed that the cells for these photos is somehow placed on screen before the actual photos are downloaded completely. Then when a download completes, that photo is nicely displayed in the correct cell. I would like to copy that functionality, but I do not know how to go about it. I am currently downloading a large JSON object which I transform to an array of NSDictionaries . Each NSDictionary contains information about each photo, and among that

How to set XLSX cell width with EPPlus?

匿名 (未验证) 提交于 2019-12-03 02:45:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Hello I have this code where i create an xlsx file and i need to pre set the width of the xlsx sheet cells. The actual problem is that when i open the excell i need to double click on the gap between the columns with the mouse in order to unwrap the columns and revieal the data that is hidden. Is there a way to do this programmaticaly with Epplus? using (ExcelPackage p = new ExcelPackage()) { String filepath = "C://StatsYellowPages.csv"; DataSet ds = ExportCSVFileToDataset(filepath, "tblCustomers", "\t"); //Here setting some document

Excel macro to print sheets based on multiple values

匿名 (未验证) 提交于 2019-12-03 02:43:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I have a sheet with a macro that when i change a value in the cell E5, automatically fill certain fields in sheet1 , searches and return values from a table on other sheet - sheetTable ). My goal now is to select a range of values in a column on sheetTable and assign each one of them to Cell E5 on sheet1 , and print each one. So let's say I select 3 cells with values: 45, 50 and 66. When I run the macro it will assign 45 to cell E5 and print sheet1 , then it will assign 50 to cell E5 and print sheet1 and finally will assign 66 to cell E5 and