cursor

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 a composite index of two properties on an indexeddb objectstore and wish to retrieve a cursor based on the range of both of these properties. Here's an example object in the store : {species: 'Oak',xcoord: 123456, ycoord: 654321} and index : treeStore.createIndex("treelocation", ["xcoord","ycoord"], { unique: false }); The index creation is succesful and I can see it in the Chrome developer tools, however now I'd like to open a cursor with a keyrange on both the x and y co-ordinates (which will be the extent of a map). Searching

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 running a large query in a python script against my postgres database using psycopg2 (I upgraded to version 2.5). After the query is finished, I close the cursor and connection, and even run gc, but the process still consumes a ton of memory (7.3gb to be exact). Am I missing a cleanup step? import psycopg2 conn = psycopg2.connect("dbname='dbname' user='user' host='host'") cursor = conn.cursor() cursor.execute("""large query""") rows = cursor.fetchall() del rows cursor.close() conn.close() import gc gc.collect() 回答1: Please see the next

I wish to do something which appear a bit complicated in MySQL. In fact, I wish to open a cursor, do a loop, and in this loop, open a second cursor using the data from the previous fetch to be executed, and re-loop on the results. DECLARE idind INT; DECLARE idcrit INT; DECLARE idindid INT; DECLARE done INT DEFAULT 0; DECLARE done2 INT DEFAULT 0; DECLARE curIndicateur CURSOR FOR SELECT id_indicateur FROM indicateur; DECLARE curCritereIndicateur CURSOR FOR SELECT C.id_critere FROM critere C where C.id_indicateur=idind; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1; set idindid=54;

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 cursor disappears when making a single click, like so: How to reproduce: get the Game Jam Menu template: https://www.assetstore.unity3d.com/en/#!/content/40465 Add another scene with an FPS controller imported from the standard assets. Tick the "change scenes" in the UI -> start options component. Press escape and touch the slider, any single click will make the cursor disappear. It looks like this: https://imgur.com/a/hefmP If I tick off the mouse look -> lock cursor in the FPS controller then this doesn't happen, but I also see the

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 am seeing a weird behavior. List li = new ArrayList(); li.add("a"); li.add("b"); li.add("c"); li.add("d"); li.add("e"); for(String str:li){ if(str.equalsIgnoreCase("d")){ li.remove(str); //removing second last in list works fine } } But if i try to remove any other than second last in the list, i get ConcurrentModificationException. It came to my attention while reading "Oracle Certified Associate Java SE 7 Programmer Study Guide 2012" which incorrectly assumes that .remove() always works with an example of removing the second last in the

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 trying to debug my application on a real device but I get this error: ERROR/AndroidRuntime(981): Caused by: java.lang.IllegalArgumentException: column '_id' does not exist When I'm testing on an emulator, the error doesn't appear. The error is given in the last line of the following code: adapter = new SimpleCursorAdapter(this, R.layout.list_item, c, new String[] { DataHandlerDB.CONTACT_NAME_COL, DataHandlerDB.CONTACT_NUMBER_COL, DataHandlerDB.CONTACT_DURATION_COL, DataHandlerDB.CONTACT_DATE_COL }, new int[] { R.id.contact_name, R.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: Is there is any way or module to move cursor and simulate mouse clicks in windows7/8 with node.js? I found this library https://www.npmjs.org/package/win_mouse but seems like it doesn't work 回答1: I've been working on a module for this, RobotJS . Example code: var robot = require("robotjs"); //Get the mouse position, retuns an object with x and y. var mouse=robot.getMousePos(); console.log("Mouse is at x:" + mouse.x + " y:" + mouse.y); //Move the mouse down by 100 pixels. robot.moveMouse(mouse.x,mouse.y+100); //Left click! robot.mouseClick();

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 building a HTML5 game and I am trying to put the mouse cursor over a certain control on a specific event so that moving in a specific direction always has the same result. Is this possible? 回答1: Great question. This is really something missing from the Javascript browser API. I'm also working on a WebGL game with my team, and we need this feature. I opened an issue on Firefox's bugzilla so that we can start talking about the possibility of having an API to allow for mouse locking. This is going to be useful for all HTML5/WebGL game

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 am trying to fetch some ids that exist in a mongo database with the following code: client = MongoClient('xx.xx.xx.xx', xxx) db = client.test_database db = client['...'] collection = db.test_collection collection = db["..."] for cursor in collection.find({ "$and" : [{ "followers" : { "$gt" : 2000 } }, { "followers" : { "$lt" : 3000 } }, { "list_followers" : { "$exists" : False } }] }): print cursor['screenname'] print cursor['_id']['uid'] id = cursor['_id']['uid'] However, after a short while, I am receive this error: pymongo.errors

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 am using Oracle SQL Developer and trying to export a table to a CSV file. Some of the fields are CLOB fields, and in many cases the entries are truncated when the export happens. I'm looking for a way to get the whole thing out, as my end goal is to not use Oracle here (I received an Oracle dump - which was loaded into an oracle db, but am using the data in another format so going via CSV as an intermediary). If there are multiple solutions to this, given that it is a one time procedure for me, I don't mind the more hack-ish type