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Android: How can I get the current foreground activity (from a service)?
... the service call an event method on that callback/listener object
Send an ordered broadcast Intent to the activity, with a low-priority BroadcastReceiver as backup (to raise a Notification if the activity is not on-screen) -- here is a blog post with more on this pattern
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Only parameterless constructors and initializers are supported in LINQ to Entities
...u're building, there is another way to solve this issue.
var query = from orderDetail in context.OrderDetails
join order in context.Orders on order.OrderId equals orderDetail.orderId
select new { order, orderDetail };
At this point you have an IQueryable containing an anon...
How to query nested objects?
...subdocument matches exactly the specified subdocument, including the field order.
In the following example, the query matches all documents where the value of the field producer is a subdocument that contains only the field company with the value 'ABC123' and the field address with the value '123...
Recommended way to get hostname in Java
...iable through System.getenv()
Execute hostname and read the response
Read /etc/hostname (to do this I'm executing cat since the snippet already contains code to execute and read. Simply reading the file would be better, though).
The code:
public static void main(String[] args) throws IOException...
Python function global variables?
...ariable to 55. Otherwise it would just assign 55 to a local variable.
The order of function definition listings doesn't matter (assuming they don't refer to each other in some way), the order they are called does.
share
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JavaScript for…in vs for
...u use for in to loop over property names in an object, the results are not ordered. Worse: You might get unexpected results; it includes members inherited from the prototype chain and the name of methods.
Everything but the properties can be filtered out with .hasOwnProperty. This code sample does ...
What's the best way to put a c-struct in an NSArray?
...t).
if the serialized representation does not exit the process, then size/order/alignment of arbitrary structs should not change, and there are options which are simpler and faster.
in either event, you're already adding a ref-counted object (compared to NSData, NSValue) so... creating an objc cla...
Concurrent HashSet in .NET Framework?
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@Ralf Well, it's a set, not a list, as it's unordered.
– Servy
Sep 20 '13 at 18:18
11
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Using Linq to get the last N elements of a collection?
....Skip(Math.Max(0, collection.Count() - N));
This approach preserves item order without a dependency on any sorting, and has broad compatibility across several LINQ providers.
It is important to take care not to call Skip with a negative number. Some providers, such as the Entity Framework, will p...
How to move an iFrame in the DOM without losing its state?
...The basic idea is to create a flex-box wrapper and then define an specific order for the iframes using the order attribute on each iframe wrapper.
<style>
.container{
display: flex;
flex-direction: column;
}
</style>
<div class="container">
<div id="wrap1" style="...