delete-row

来源： https://stackoverflow.com/questions/48180862/remove-r-dataframe-rows-based-on-zero-values-in-one-column

问题 The bounty expires in 3 days . Answers to this question are eligible for a +50 reputation bounty. Wini is looking for a canonical answer . I'm trying to delete an row of recyclerview using room.im doing swipe to delete a particular row.... here is my Address table--> @Entity(tableName = "address") class Address { @PrimaryKey(autoGenerate = true) var id = 0 @ColumnInfo(name = "address") var address: String? = null } AddressDao: @Dao interface AddressDao { @Insert suspend fun addData(address:

问题 The bounty expires in 3 days . Answers to this question are eligible for a +50 reputation bounty. Wini is looking for a canonical answer . I'm trying to delete an row of recyclerview using room.im doing swipe to delete a particular row.... here is my Address table--> @Entity(tableName = "address") class Address { @PrimaryKey(autoGenerate = true) var id = 0 @ColumnInfo(name = "address") var address: String? = null } AddressDao: @Dao interface AddressDao { @Insert suspend fun addData(address:

问题 I'm making a system to display pages in the system in a table and one of the columns is the action column giving people the option to delete the page. I did this: listpages.php <?php $sql = "SELECT * FROM Pages"; $result = $conn->query($sql); if ($result) { while($row = $result->fetch_assoc()) { $pages[] = array_map('htmlspecialchars', $row); } } // PHP is finished now, here's the HTML ?> <form method="post" action="utils/delpage.php"> <table> <thead> <tr> <th>Page Name</th> <th>Page Type</th

问题 Image I have an EditText which adds items to this RecyclerView and to the Realm DB. That works fine. The problem is that I don't know how to remove those items from both the RecyclerView and from the Realm DB. Should this be done on the Fragment or on the adapter? And how? Thanks! There is an image on top showing a screenshot of the app. Here is the Fragment where the RecyclerView is: public class FragmentMyList extends Fragment{ private RecyclerView recyclerView; private EditText editTxt;

问题 Image I have an EditText which adds items to this RecyclerView and to the Realm DB. That works fine. The problem is that I don't know how to remove those items from both the RecyclerView and from the Realm DB. Should this be done on the Fragment or on the adapter? And how? Thanks! There is an image on top showing a screenshot of the app. Here is the Fragment where the RecyclerView is: public class FragmentMyList extends Fragment{ private RecyclerView recyclerView; private EditText editTxt;

问题 How to remove row in two dimensional array in JavaScript with row number. If I want to delete all elements in row number 4 then how can do it?? 回答1: Here's an example of how to remove a row by using splice: var array = []; var count = 0; for (var row=0; row<4; row++) { array[row] = []; for (var col=0; col<5; col++) { array[row][col] = count++; } } console.log(array); [ [ 0, 1, 2, 3, 4 ], [ 5, 6, 7, 8, 9 ], [ 10, 11, 12, 13, 14 ], [ 15, 16, 17, 18, 19 ] ] function deleteRow(arr, row) { arr =

问题 How to delete a specific row and column from 2D array in C#? int[,] array= {{1,2,3},{4,5,6},{7,8,9}}; lets say I want to delete row i and column i (skipping them) ... for nXn array not just 3x3 and store the remaining array in a new array... so the output would be: {5,6},{8,9} 回答1: There's no built-in way to do that, you can do it yourself: static void Main() { int[,] array = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } }; var trim = TrimArray(0, 2, array); } public static int[,] TrimArray(int

问题 I don't really understand why regular indexing can't be used for np.delete. What makes np.s_ so special? For example with this code, used to delete the some of the rows of this array.. inlet_names = np.delete(inlet_names, np.s_[1:9], axis = 0) Why can't I simply use regular indexing and do.. inlet_names = np.delete(inlet_names, [1:9], axis = 0) or inlet_names = np.delete(inlet_names, inlet_names[1:9], axis = 0) From what I can gather, np.s_ is the same as np.index_exp except it doesn't return

问题 I don't really understand why regular indexing can't be used for np.delete. What makes np.s_ so special? For example with this code, used to delete the some of the rows of this array.. inlet_names = np.delete(inlet_names, np.s_[1:9], axis = 0) Why can't I simply use regular indexing and do.. inlet_names = np.delete(inlet_names, [1:9], axis = 0) or inlet_names = np.delete(inlet_names, inlet_names[1:9], axis = 0) From what I can gather, np.s_ is the same as np.index_exp except it doesn't return