clear

问题 I have the following problem. I use a form when I provide only PIN. I have validator which checks if its a 4-digit number. Then the action on submit is set to the method which checks if the PIN exists in the database. If not it does message = "no PIN"; I used the message in the output label below the form. Previously it was null so there was no message there. Now it changes into "no PIN" but I have to clear it after clicking the submit button again because the error message doesn't disappear

问题 I am working on a side-scrolling game in Flash Actionscript 3.0. Right now I am trying to allow the Player to advance to the next level by touching a certain object. Before the next level is loaded, I try to remove all of the previous level's assets (background and "floor"), which are MovieClips, from the stage. When the next level loads, I can still see the previous level's assets, although the Player cannot interact with them. I have looked around the Internet and tried a few methods to fix

问题 I'm trying to get two divs to float to opposite sides of the page, with text flowing between them. The top of the second (left-aligned) div should be even with the bottom of the first (right-aligned) div. The code below works fine in FF, Chrome, Opera, etc. fine, but they do not clear properly in IE. Both divs appear at the top of the text. If I move the left-aligned div low enough within the text, it works fine in IE, but that's not really a sustainable solution. I've found multiple pages on

问题 I am trying to take latest using cleartool update command but it throws an error saying " abc " is not a valid snapshot view path, maybe because mine is not a snapshot view but rather a Web view. How can I get latest of Web view? My view is C:\CCRC\WKB Actual view on server looks something like //aet/ccase/vws1/s123/dev.po.vws How should I write the command to get the latest Web view? 回答1: As mentioned in "About ClearCase views" A web view is a copy-based ClearCase view that is tolerant of

问题 I was looking for posts regarding to this, but I don't fully understand... What is the difference between: [context reset]; and: for (NSManagedObjectID *objId in objectIds) { [context deleteObject:[context objectWithID:objId]]; } Or are they equivalent? Thanks 回答1: Using reset puts the managed object context back to the state it was in when you first created it-- before you had performed any fetches, created any new objects, etc. If you have any managed objects in memory that were fetched

问题 For some reason in my program when I reach a certain spot, I have to press Enter twice in order to get it to submit. I added the clear to keep it from skipping input and the ignore() to keep it from keeping any extra characters in the buffer. I enter my input and then it drops down to a new line, I hit Enter again and it enter the input and continues the program no problem but I'm wondering why. Here's a code snippet: cin.ignore(); cout << "Enter Student Major (ex. COSC): "; cin.getline

问题 I have the below JQuery Dialog script, I'm trying to find out how to fire off a function that clears the form when I close the dialog. function clearForm() { $(':input','#calcQuery') .not(':button, :submit, :reset, :hidden') .val(''); }; // form popup $(document).ready(function() { //var dataString = $("#calcQuery").serialize(); $("#formBox").dialog({ bgiframe: true, autoOpen: false, height: 600, width: 400, modal: false, closeOnEscape: true, title: "Calculator", buttons: { "Calculate":

问题 I know you can clear the shell by executing clear using os.system , but this way seems quite messy to me since the commands are logged in the history and are litterally interpreted as commands run as the user to the OS. I'd like to know if there is a better way to clear the output in a commandline script? 回答1: print "\033c" works on my system. You could also cache the clear-screen escape sequence produced by clear command: import subprocess clear_screen_seq = subprocess.check_output('clear')

问题 Because my editext is the string format it doesn't clear all the text when i long press on the backspace key. so i am looking for solution to clear all text when long press on the backspace key ?? 回答1: Try this @Override public boolean onKeyLongPress(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_DEL) { textView.setText(""); return true; } return super.onKeyLongPress(keyCode, event); 回答2: You can do it by overriding onKeyLongPress() like @Override public boolean onKeyLongPress

问题 Because my editext is the string format it doesn't clear all the text when i long press on the backspace key. so i am looking for solution to clear all text when long press on the backspace key ?? 回答1: Try this @Override public boolean onKeyLongPress(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_DEL) { textView.setText(""); return true; } return super.onKeyLongPress(keyCode, event); 回答2: You can do it by overriding onKeyLongPress() like @Override public boolean onKeyLongPress