wait

问题 I read the following code in "Thinking in java". synchronized(obj) { while (condition_not_matched) { obj.wait(); } //continue dosomething(); } What I think: Use "if" is OK, because the "wait" means it must get the obj's lock monitor, and only one thread can executed here. (1)Why here use "while (condition)" not "if" ? (2)What happend when executed "obj.wait()"? Does the currrent thread release the lock of "obj"? (3)And when another thread executed "obj.notify()", what happend of the previous

问题 I read the following code in "Thinking in java". synchronized(obj) { while (condition_not_matched) { obj.wait(); } //continue dosomething(); } What I think: Use "if" is OK, because the "wait" means it must get the obj's lock monitor, and only one thread can executed here. (1)Why here use "while (condition)" not "if" ? (2)What happend when executed "obj.wait()"? Does the currrent thread release the lock of "obj"? (3)And when another thread executed "obj.notify()", what happend of the previous

问题 I read the following code in "Thinking in java". synchronized(obj) { while (condition_not_matched) { obj.wait(); } //continue dosomething(); } What I think: Use "if" is OK, because the "wait" means it must get the obj's lock monitor, and only one thread can executed here. (1)Why here use "while (condition)" not "if" ? (2)What happend when executed "obj.wait()"? Does the currrent thread release the lock of "obj"? (3)And when another thread executed "obj.notify()", what happend of the previous

问题 I want to prompt user to choose between yes and no in the middle of a function and then continue the function accordingly. How is it possible? Here is my code: def download_popup(file_name, url, size, threshold): root = Tk() label = Label(root, text="The file {file} at {url} is {size}Bytes large which is larger than your threshold({threshold})." "\nShall I still download it?".format(file_name, url, size, threshold)) yes = ttk.Button(root, width=5, text="yse", command=lambda: return True) no =

问题 I am writing a VBA macro that will simply open another workbook, refresh all, save, and then close. It will repeat this with a second workbook. Then it refreshes and save the main workbook that the VBA code was run from. The problem I am facing is that the two workbooks being opened are using Microsoft queries to pull data from our JobBoss database and it is set to refresh this data upon opening the file. So the file opens, starts refreshing the query data and then the VBA code tries to

问题 I am writing a VBA macro that will simply open another workbook, refresh all, save, and then close. It will repeat this with a second workbook. Then it refreshes and save the main workbook that the VBA code was run from. The problem I am facing is that the two workbooks being opened are using Microsoft queries to pull data from our JobBoss database and it is set to refresh this data upon opening the file. So the file opens, starts refreshing the query data and then the VBA code tries to

问题 I am trying to make my code wait x seconds before doing something. I looked up how to do this, and found out about the WaitForSeconds() function. Unfortunately, whenever I try to use it I get red underlines in my code. I am trying to make it so when you die it waits a few seconds before you respawn: void Respawn() { yield return new WaitForSeconds(5); gameObject.transform.position = spawnPoint; } I also understand I need to put something like StartCoroutine(Example()); somewhere but I also

问题 At a very high level, we click a button which commands a building-control point; turns a light on or off. The click is supposed to send a POST request to the server. The issue is sometimes, the button is clicked and the POST request does not go out. The button has no functionality to indicate if it has been clicked (minor enhancement) . For the time being, I want to work around this using Cypress plug-in waitUntil() . // define routes cy.server(); cy.route('POST', '\*\*/pointcommands').as(

问题 Friends, please help! I don't know how to do "wait.until". I'm using Appium with UIAutomator. My test would wait until new app's page will loaded and 'Text 1' in text field will be checked. I have such parameters in UIAutomator: text : Text 1; recource-id: payment_content_title; class: android.widget.TextView; package: ru.mts.stm.mobilemts; IntelliJ says that my code is incorrect: WebDriverWait wait; wait = new WebDriverWait(driver, 60); wait.until(ExpectedConditions.textToBe(new MobileBy

问题 Look at this simple code: function Start() { yield WaitForSeconds (4); Application.LoadLevel(1); } It works! I'm trying to make something similiar using C#, but the processor just ignore the WaitForSeconds. This is my code in C#: using UnityEngine; using System.Collections; public class openingC : MonoBehaviour { void Start() { executeWait(5); Application.LoadLevel(1); } void executeWait(float aux) { StartCoroutine(Wait(aux)); } IEnumerator Wait(float seconds) { yield return new