synchronization

问题 Opened my app and ran into gradle sync problems. I am so sure that I didn't touch the gradle files. This is what I am getting - ERROR: startup failed: build file 'C:\Users\Ibrahim\AndroidStudioProjects\Misnap\app\build.gradle': 1: unexpected char: 0x0 @ line 1, column 8. � � � � 5 V � 1 2 3 � � � � � � � � � � % * + - ^ 1 error I tried Delete iml file and .idea directory - didnt work I also did a clean and rebuild project - didnt work, infact the clean project is not showing anymore, just

问题 I have two threads and I want the second thread to wait until first thread finishes. How can I accomplish this? This my code: public class NewClass1 implements Runnable { // in main CallMatlab c = new CallMatlab(); CUI m = new CUI(); Thread t1 = new Thread(c); t1.start(); Thread t2 = new Thread(m); try { t1.join(); } catch (InterruptedException ex) { Logger.getLogger(NewClass1.class.getName()).log(Level.SEVERE, null, ex); } t2.start(); // public void run() { throw new

问题 I have two threads and I want the second thread to wait until first thread finishes. How can I accomplish this? This my code: public class NewClass1 implements Runnable { // in main CallMatlab c = new CallMatlab(); CUI m = new CUI(); Thread t1 = new Thread(c); t1.start(); Thread t2 = new Thread(m); try { t1.join(); } catch (InterruptedException ex) { Logger.getLogger(NewClass1.class.getName()).log(Level.SEVERE, null, ex); } t2.start(); // public void run() { throw new

问题 I’d like to push some data from MySQL into Google Sheets. Once I’ve edited my data in Google Sheets, I’d like to push my edited data back into MySQL. Ideally, I’d even like to schedule it to update it every hour, so my data is always live and matches what's in my MySQL. I’ve looked into Google Sheets Script and it seems that it enables you to type in a SQL query into a cell in Google Sheets and retrieve your queried data. However, the main issue, even though I find a proper way to export my

问题 I’d like to push some data from MySQL into Google Sheets. Once I’ve edited my data in Google Sheets, I’d like to push my edited data back into MySQL. Ideally, I’d even like to schedule it to update it every hour, so my data is always live and matches what's in my MySQL. I’ve looked into Google Sheets Script and it seems that it enables you to type in a SQL query into a cell in Google Sheets and retrieve your queried data. However, the main issue, even though I find a proper way to export my

问题 Don't understand why mark() and reset() are synchronized and why read() not? 回答1: java.io.InputStream is an abstract class. It has a default implementation for mark/reset that only throw an exception on reset telling that is not supported so subclasses that don't support it don't need to code their own method throwing the exception. "synchronized" is not useful for the default case, to throw an exception. Any subclass that supports it will have to override those methods and synchronization is

问题 I am making a web crawler. I'm passing the url through a crawler function and parsing it to get all the links in the anchor tag, then I am invoking same crawler function for all those urls using seperate goroutine for every url. But if if send a request and cancel it before I get the response, all the groutines for that particular request are still running. Now what I want is that when I cancel the request all the goroutines that got invoked due to that request stops. Please guide. Following

问题 I've never really written in vbs (once wrote a script that would welcome me on boot) but I'm after a script to essentially perform : robocopy "folder1" "folder2" /MIR At the moment what I've got is a copied script from here VBS Mirror, Using the top script : This code synchronizes the contents (files and subfolders) of two folders. Each folder is traversed recursively and any missing subfolders and files are copied both ways. If corresponding folders contain files with matching file names but

问题 Good day! I have this problem that every text change in the text box, selected item in the datagriview should copy its value. I have this code but it lags when I type(like very fast) in the textbox. Is there any better way to do this w/o lagging? Please help... Here's what I have so far: private void txtText_TextChanged(object sender, EventArgs e) { DataGridView1[2, pos].Value = txtText.Text; } 回答1: You may need to limit the number of events that are handled. Do your requirements allow you to

问题 In my MPI program, I want to send and receive information to adjacent processes. But if a process ends and doesn't send anything, its neighbors will wait forever. How can I resolve this issue? Here is what I am trying to do: if (rank == 0) { // don't do anything until all slaves are done } else { while (condition) { // send info to rank-1 and rank+1 // if can receive info from rank-1, receive it, store received info locally // if cannot receive info from rank-1, use locally stored info // do