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How to detect if a property exists on an ExpandoObject?

...blic object this[string key] { get { object value; _innerDictionary.TryGetValue(key, out value); return value; } set { _innerDictionary[key] = value; } } https://github.com/ASP-NET-MVC/aspnetwebstack/blob/master/src/System.Web.Mvc/ViewDataDictionary.cs In o...
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How to cancel/abort jQuery AJAX request?

...dyState which contains the state of the request(UNSENT-0, OPENED-1, HEADERS_RECEIVED-2, LOADING-3 and DONE-4). we can use this to check whether the previous request was completed. $(document).ready( var xhr; var fn = function(){ if(xhr && xhr.readyState != 4){ x...
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How to select the nth row in a SQL database table?

...upports the standard windowing functions: SELECT * FROM ( SELECT ROW_NUMBER() OVER (ORDER BY key ASC) AS rownumber, columns FROM tablename ) AS foo WHERE rownumber <= n (which I just copied from the site linked above since I never use those DBs) Update: As of PostgreSQL 8.4 the st...
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When should I use uuid.uuid1() vs. uuid.uuid4() in python?

...to note when using uuid1, if you use the default call (without giving clock_seq parameter) you have a chance of running into collisions: you have only 14 bit of randomness (generating 18 entries within 100ns gives you roughly 1% chance of a collision see birthday paradox/attack). The problem will ne...
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Pure virtual function with implementation

...f() means that B may use it to define f(). – fearless_fool Jan 6 '15 at 5:46 2 ...
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1114 (HY000): The table is full

...elated resolution. You seem to have a too low maximum size for your innodb_data_file_path in your my.cnf, In this example innodb_data_file_path = ibdata1:10M:autoextend:max:512M you cannot host more than 512MB of data in all innodb tables combined. Maybe you should switch to an innodb-per-table...
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How do I send a POST request as a JSON?

... 6] } req = urllib2.Request('http://example.com/api/posts/create') req.add_header('Content-Type', 'application/json') response = urllib2.urlopen(req, json.dumps(data)) Python 3.x https://stackoverflow.com/a/26876308/496445 If you don't specify the header, it will be the default application/x...
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Android: how do I check if activity is running?

...r activityManager = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> tasks = activityManager.getRunningTasks(Integer.MAX_VALUE); for (RunningTaskInfo task : tasks) { if (ctx.getPackageName().equalsIgnoreCase(task.baseActivity....
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Convert NSNumber to int in Objective-C

...r interfacing with cross-platform libs. And even then something like uint32_t would be better to use. – Max Seelemann Jan 11 '15 at 13:06 1 ...
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How do I exit a WPF application programmatically?

...is where from one window pop up another window and, in that window's window_closed event I added this code. all the windows disappear, but the program still runs beyond where after the pop up is created. – diyoda_ Jan 5 '13 at 17:37 ...