sync | 易学教程

getJSON Synchronous

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问题 GOAL: What I'm after is to get data from database and refresh main.php (more evident through draw_polygon) every time something is added in database (after $.ajax to submit_to_db.php). So basically I have a main.php that will ajax call another php to receive an array that will be saved to database, and a json call another php to return an array will be used by main.php. $(document).ready(function() { get_from_db(); $('#button_cancel').click(function(){ $.ajax({ url: 'submit_to_db.php', type:

Sync Android devices via GPS time?

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问题 Short version: Problem: I need several Android devices to do something at the exact same time (within ca 100 milliseconds). For example, I want all devices to play a certain sound at previously determined point in time. Question: Could I use GPS time to make sure the devices clock's are synced? Longer version: Several people having Android devices are in the same outdoor location (for some specific sports event). All devices should signal certain events at the exact same time. (What time will

Android - Best way to sync SQLite with MySQL [duplicate]

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问题 This question already has an answer here: Synchronizing client-server databases 5 answers I'm working on a project containing web app and mobile app which records daily user's data. User are able to delete, update their data and they can use many devices to insert data. I intend to develop this way: User enter their data and then insert to SQLite. A service will start periodically (each 5hr or sth) to sync with MySQL using timestamp. I did search for a sample using service and timestamp on

node.js execute system command synchronously

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I need in node.js function result = execSync('node -v'); that will synchronously execute the given command line and return all stdout'ed by that command text. ps. Sync is wrong. I know. Just for personal use. UPDATE Now we have mgutz's solution which gives us exit code, but not stdout! Still waiting for a more precise answer. UPDATE mgutz updated his answer and the solution is here :) Also, as dgo.a mentioned, there is stand-alone module exec-sync UPDATE 2014-07-30 ShellJS lib arrived. Consider this is the best choice for now. UPDATE 2015-02-10 AT LAST! NodeJS 0.12 supports execSync natively.

node.js execute system command synchronously

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问题 I need in node.js function result = execSync(\'node -v\'); that will synchronously execute the given command line and return all stdout\'ed by that command text. ps. Sync is wrong. I know. Just for personal use. UPDATE Now we have mgutz\'s solution which gives us exit code, but not stdout! Still waiting for a more precise answer. UPDATE mgutz updated his answer and the solution is here :) Also, as dgo.a mentioned, there is stand-alone module exec-sync UPDATE 2014-07-30 ShellJS lib arrived.

How to Sync iPhone Core Data with web server, and then push to other devices? [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I have been working on a method to sync core data stored in an iPhone application between multiple devices, such as an iPad or a Mac. There are not many (if any at all) sync frameworks for use with Core Data on iOS. However, I have been thinking about the following concept: A change