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When can I use a forward declaration?
I am looking for the definition of when I am allowed to do forward declaration of a class in another class's header file:
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What are the main purposes of using std::forward and which problems it solves?
In perfect forwarding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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void in C# generics?
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return ThankYou.Bye;
}
Or use something already made by the Rx team: http://msdn.microsoft.com/en-us/library/system.reactive.unit%28v=VS.103%29.aspx
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LISTAGG in Oracle to return distinct values
I am trying to use the LISTAGG function in Oracle. I would like to get only the distinct values for that column. Is there a way in which I can get only the distinct values without creating a function or a procedure?
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C# equivalent to Java's charAt()?
...iteLine(sample[0]);
And
Console.WriteLine(sample.Chars(0));
Reference: http://msdn.microsoft.com/en-us/library/system.string.chars%28v=VS.71%29.aspx
The above is same as using indexers in c#.
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Hibernate Annotations - Which is better, field or property access?
... quick survey via Google suggests that field access is the majority (e.g., http://java.dzone.com/tips/12-feb-jpa-20-why-accesstype).
I believe field access is the idiom recommended by Spring, but I can't find a reference to back that up.
There's a related SO question that tried to measure performa...
Getting back old copy paste behaviour in tmux, with mouse
...e are more details and some handy key bindings to automate all this here:
http://tangledhelix.com/blog/2012/07/16/tmux-and-mouse-mode/
The main thrust of the article linked to above is this excerpt from .tmux.conf:
# disable mouse control by default - change 'off' to 'on' to enable by default.
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Parallel.ForEach vs Task.Factory.StartNew
... @Tarkus If you're making multiple requests, you're better off just using HttpClient.GetString in each work item (in your Parallel loop). No reason to put an async option inside of the already concurrent loop, typically...
– Reed Copsey
May 29 '12 at 16:44
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Django Server Error: port is already in use
...one is already running? That won't work as the first one will be using the HTTP port. You must kill or terminate the first one, before trying to run again (at least run it on the same port).
– Some programmer dude
Nov 27 '13 at 10:05
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Require returns an empty object
...) will be the full book.js module object
For more info, here's the docs: http://nodejs.org/api/modules.html
If its possible to dynamically add that schema to one of those ActiveRecord objects, that's one way to solve this. This is actually kind of a tricky situation. In fact, even without the mod...