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Is it OK to leave a channel open?
...
It's OK to leave a Go channel open forever and never close it. When the channel is no longer used, it will be garbage collected.
Note that it is only necessary to close a channel if the receiver is
looking for a close. Closing the channel is a control signal on...
Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
...t this error message when trying to access the database, both from the CLI and from loading a page on the server:
4 Answers...
How to call base.base.method()?
...Special Derived.");
var ptr = typeof(Base).GetMethod("Say").MethodHandle.GetFunctionPointer();
var baseSay = (Action)Activator.CreateInstance(typeof(Action), this, ptr);
baseSay();
}
}
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What is an efficient way to implement a singleton pattern in Java? [closed]
...pt that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is the bes...
GCC dump preprocessor defines
Is there a way for gcc/g++ to dump its preprocessor defines from the command line?
I mean things like __GNUC__ , __STDC__ , and so on.
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Debugging “Element is not clickable at point” error
...our element is wrapped in a div or a span. The page can be fully loaded, and completely within the viewport, but Chromedriver will refuse to click it, where the webdriver for FF and IE have no issue. A real human has no clue that the span exists, and the browser doesn't care when you actually cli...
ASP.NET: HTTP Error 500.19 – Internal Server Error 0x8007000d
I am replicating web application deployment and found several issues related to HTTP Error 500.19 . My machine is running Windows 7 while the working development is using Windows 8 . We're developing our Web Application using Visual Studio 2010 .
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How to list npm user-installed packages?
...ed package ONLY in npm ? When I do npm -g list it outputs every package and their dependencies, which is not what I want.
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Java: Multiple class declarations in one file
...ed type (which I would otherwise agree with): if the main class is generic and the type parameter is the second class, the second class can't be nested. And if the two classes are tightly coupled (like PublicClass and PrivateImpl in the question), I think it's a good idea to put PrivateImpl as a top...
Why are you not able to declare a class as static in Java?
...the same topic :
Java: Static vs non static inner class
Java inner class and static nested class
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