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Ways to circumvent the same-origin policy
...company.com.
With this method, you would be allowed to exectue javascript from an iframe sourced on a subdomain on a page sourced on the main domain. This method is not suited for cross-domain resources as browsers like Firefox will not allow you to change the document.domain to a completely alien ...
How to prevent a click on a '#' link from jumping to top of page?
...
In jQuery, when you handle the click event, return false to stop the link from responding the usual way prevent the default action, which is to visit the href attribute, from taking place (per PoweRoy's comment and Erik's answer):
$('a.someclass').click(function(e)
{
// Special stuff to do whe...
When to call activity context OR application context?
...plicationContext().
Use getApplicationContext() when you bind to a Service from an Activity, if you wish to pass the ServiceConnection (i.e., the handle to the binding) between Activity instances via onRetainNonConfigurationInstance(). Android internally tracks bindings via these ServiceConnections ...
Get controller and action name from within controller?
...tic.
// controller constructor
public MyController() {
// grab action from RequestContext
string action = System.Web.HttpContext.Current.Request.RequestContext.RouteData.GetRequiredString("action");
// grab session (another example of using System.Web.HttpContext static reference)
...
How is the fork/join framework better than a thread pool?
...k into N subtasks in the beginning, sending them to a cached thread pool (from Executors ) and waiting for each task to complete? I fail to see how using the fork/join abstraction simplifies the problem or makes the solution more efficient from what we've had for years now.
...
Differences between Proxy and Decorator Pattern
...
Here is the direct quote from the GoF (page 216).
Although decorators can have similar implementations as proxies, decorators have a different purpose. A decorator adds one or more responsibilities to an object, whereas a proxy controls access to...
How does LMAX's disruptor pattern work?
...ttern, a description of the consumer barriers (the part related to reading from the disruptor) and some information on handling multiple producers available.
The simplest description of the Disruptor is: It is a way of sending messages between threads in the most efficient manner possible. It can b...
How to extract epoch from LocalDate and LocalDateTime?
How do I extract the epoch value to Long from instances of LocalDateTime or LocalDate ? I've tried
the following, but it gives me other results:
...
psycopg2: insert multiple rows with one query
...
Just confirmed this improvement myself. From what I've read psycopg2's executemany doesn't do anything optimal, just loops and does many execute statements. Using this method, a 700 row insert to a remote server went from 60s to <2s.
– Nels...
Compute a confidence interval from sample data
...assumptions for both are that the sample (array a) was drawn independently from a normal distribution with unknown standard deviation (see MathWorld or Wikipedia).
For large sample size n, the sample mean is normally distributed, and one can calculate its confidence interval using st.norm.interval(...