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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I want to integrate libspotify as sound/player service and integrate spotify in more then one java applications. Can anyone suggest me any lib or any code example to get me started? 回答1: Disclaimer: I work for Spotify At the moment, Spotify doesn't have a nice Java wrapper for libspotify, but this is definitely something we are thinking about doing in the future. I can't offer an estimate on when this will be available, so if you are dying to get started writing apps which integrate with Spotify, you should use the natively

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I run the script from Workbench. Here is the complete script: SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES'; -- Schema mydb DROP SCHEMA IF EXISTS `mydb` ; CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ; USE `mydb` ; -- Table mydb . categories DROP TABLE IF EXISTS `mydb`.`categories` ; CREATE TABLE IF NOT EXISTS `mydb`.`categories` ( `categories_id`

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need my model to return only those records from one table where a matching record does not exist in another table. I was thinking that the solution might be with Query Scopes but the documentation only scratches the surface. So my SQL would look something like this: SELECT * FROM A WHERE NOT EXISTS (SELECT A_id FROM B WHERE B.A_id = A.id) Here are my tables: A ------------- | id | name | ------------- B -------------------- | id | A_id | name | -------------------- Probably unnecessary but here are my models. Model for A: class A extends

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm not able to build the solution in Visual Studio 2013. This just happened after I updated my JSON.NET package to 6.0.1. Before that, it was working like a charm. Any ideas? PS: It's probably something about OWIN. It references JSON.NET too I think, maybe dynamically? Full error Error 11 The type 'Newtonsoft.Json.Linq.JObject' exists in both 'c:\Program Files (x86)\Microsoft Visual Studio 12.0\Blend\Newtonsoft.Json.dll' and 'c:\Users\Me\Desktop\Solutions\[Project]\packages\Newtonsoft.Json.6.0.1\lib\net45\Newtonsoft.Json.dll' C:\Users\Me

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an [Orders] form where you register orders to be saved in an [Orders] table. Within that form there are 2 fields; you chose a provider's name from a combo box, and when you do that the company code of that provider is autofilled with a dlookup from a table called [providers]. Sometimes, though, the order is for a NEW provider whose info is not in my table. In that case, the user has to input the name and code manually. How can I use this info to INSERT this as a new record in the [providers] table, so that the next time this provider

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I need to check to see if a column exists and if it doesn't exist add it. From my research it looks like sqlite doesn't support IF statements and case statement should be used instead. Here is what I have so far: SELECT CASE WHEN exists ( select * from qaqc . columns where Name = "arg" and Object_ID = Object_ID ( "QAQC_Tasks" )) = 0 THEN ALTER TABLE QAQC_Tasks ADD arg INT DEFAULT ( 0 ); But I get the error: Near "ALTER": Syntax error. Any ideas? 回答1: You cannot use ALTER TABLE with case . You are looking for getting the column

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have been searching for a performance benchmarking between Contains , Exists and Any methods available in the List . I wanted to find this out just out of curiosity as I was always confused among these. Many questions on SO described definitions of these methods such as: LINQ Ring: Any() vs Contains() for Huge Collections Linq .Any VS .Exists - Whats the difference? LINQ extension methods - Any() vs. Where() vs. Exists() So I decided to do it myself. I am adding it as an answer. Any more insight on the results is most welcomed. I also did

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The following tests works fine on iOS 11. It dismisses the alert asking permissions to use the locations services and then zooms in in the map. On iOS 10 or 9, it does none of this and the test still succeeds func testExample() { let app = XCUIApplication() var handled = false var appeared = false let token = addUIInterruptionMonitor(withDescription: "Location") { (alert) -> Bool in appeared = true let allow = alert.buttons["Allow"] if allow.exists { allow.tap() handled = true return true } return false } // Interruption won't happen without

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have several threads running in parallel from Python on a cluster system. Each python thread outputs to a directory mydir . Each script, before outputting checks if mydir exists and if not creates it: if not os.path.isdir(mydir): os.makedirs(mydir) but this yields the error: os.makedirs(self.log_dir) File "/usr/lib/python2.6/os.py", line 157, in makedirs mkdir(name,mode) OSError: [Errno 17] File exists I suspect it might be due to a race condition, where one job creates the dir before the other gets to it. Is this possible? If so, how can

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: public class DataBaseClass extends SQLiteOpenHelper { public static final String DB_NAME = "USER DATA"; public static final int DB_VERSION = 1; public static final String TABLE_NAME_USERSINFO = "UserInformation"; public static final String COLUMN_NAME_FIRSTNAME = "FirstNamestring"; public static final String COLUMN_NAME_LASTNAME = "LastNamestring"; public static final String COLUMN_NAME_ADD1 = "Add1string"; public static final String COLUMN_NAME_ADD2 = "Add2string"; public static final String COLUMN_NAME_SSNFRST ="SSnfirststring"; public