row

问题 I have a problem. I use extjs grid . This grid will be refreshed every seconds . I refresh with this function: ND.refresh = function() { ND.commList.load(); } var refreshSeconds = refreshRate * 1000; var t = setInterval('ND.refresh()', refreshSeconds); But when someone selected a row to highlight it it reset this selection. How can I remember the selected row and highlight it again after refresh? This is my grid: var grid = Ext.create('Ext.grid.Panel', { autoscroll: true, region: 'center',

问题 This is the example table: Column | 1st record | 2nd record | 3rd record | 4th record | etc<br /> id (primary) | 1 | 5 | 8 | 12 | etc<br /> name | name 1 | name 2 | name 3 | name 4 | etc<br /> date | date 1 | date 2 | date 3 | date 4 | etc<br /> callValue (unique) | val1 | val2 | val3 | val4 | etc I select one row that is the data to show (for example: row with callValue: val3). But I cannot find a solution for this: I need to select previous and next row. So, in this example, I need to get

问题 This is a very simple question but I couldn't find the answer in Google or in OpenCV documentation. How do you insert a row with either a vector or a default number at the bottom of a cv::Mat ? I tried: std::vector<double> v = {0, 0, 1}; m.push_back(v); which compiles, but it always gets me an assertion error. What is the right way to do it? 回答1: The added element must be a Mat with the same number of columns as the container matrix: cv::Mat m = cv::Mat::ones(4, 3, CV_64F); // 3 cols, 4 rows

问题 This is a very simple question but I couldn't find the answer in Google or in OpenCV documentation. How do you insert a row with either a vector or a default number at the bottom of a cv::Mat ? I tried: std::vector<double> v = {0, 0, 1}; m.push_back(v); which compiles, but it always gets me an assertion error. What is the right way to do it? 回答1: The added element must be a Mat with the same number of columns as the container matrix: cv::Mat m = cv::Mat::ones(4, 3, CV_64F); // 3 cols, 4 rows

问题 I'm new in objective-c. I have a tableView with 3 rows and 1 section. Can you help me how to add row with some text in a table by pressing button (addCity)? - (void)viewDidLoad { [super viewDidLoad]; m_bg.image = [UIImage imageNamed:[WeatherAppDelegate isNight] ? @"SettingsBackNight.png" : @"SettingsBackDay.png" ]; tableView.layer.cornerRadius = 10; m_scrollView.layer.cornerRadius = 10; [m_scrollView setContentSize:CGSizeMake(tableView.frame.size.width, tableView.frame.size.height)];

问题 How can I get the total number of rows that are in a CSV file using PHP? I'm using this method but can get it to work properly. if (($fp = fopen("test.csv", "r")) !== FALSE) { while (($record = fgetcsv($fp)) !== FALSE) { $row++; } echo $row; } 回答1: Here's another option using file() to read the entire file into an array, automatically parsing new lines etc: $fp = file('test.csv'); echo count($fp); Also, since PHP5, you can pass in the FILE_SKIP_EMPTY_LINES ... to skip empty lines, if you want

问题 I just wrote a code that creates a window (using TKinter) and displays one working button. b = Button(master, text="get", width=10, command=callback) But i would like to have multiple buttons underneath this one. How do you set the row and column of the button? I tried to add row = 0, column = 0, but that would not work. Thanks 回答1: astynax is right. To follow the example you gave: MyButton1 = Button(master, text="BUTTON1", width=10, command=callback) MyButton1.grid(row=0, column=0) MyButton2

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . I have a data table in R, called A, which has three columns Col1, Col2, and Col3. Another table, called B, also has the same three columns. I want to remove all the rows in table A, for which the pairs (Col1, Col2) are present in table B. I tried, but I am not sure how to do this. I am stuck on

问题 I tried to get row like this : DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(i); TextBlock cellContent = dataGrid.Columns[0].GetCellContent(row) as TextBlock; But I only got null . Is there another solution? What am I doing wrong? I want to get data from my cells. My cells are checkboxes. 回答1: This depends on how / when you are attempting to get this data. WPF is more geared towards accessing the data by the objects bound in the ItemsSource. So, if your

问题 Leaving aside the libraries that provide row grouping for their particular tables, I am trying to implement such a feature on Angular Material 2 mat-table which does not come with such a feature. Items to populate the table: export class BasketItem{ public id: number; public position: number; public quantity: number; public groupId: number; } Grouping rows that have same groupId property in the following table <mat-table class="mat-elevation-z8" [dataSource]="dataSource" multiTemplateDataRows