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How does Java Garbage Collection work with Circular References?
...ge collector handles circular-reference!
How?
There are special objects called called garbage-collection roots (GC roots). These are always reachable and so is any object that has them at its own root.
A simple Java application has the following GC roots:
Local variables in the main method
The...
How does generic lambda work in C++14?
...y, the closure type defined by the lambda expression will have a templated call operator rather than the regular, non-template call operator of C++11's lambdas (of course, when auto appears at least once in the parameter list).
So your example:
auto glambda = [] (auto a) { return a; };
Will mak...
Xcode changes unmodified storyboard and XIB files
...cument based on the logical tree structure, clears the storyboard file and calls XMLDataWithOptions: to fill the file again. Because sets do not preserve the order of their elements, even the slightest modification could change the whole storyboard XML file.
Why does the class tag disappear or reapp...
Html.RenderPartial() syntax with Razor
... }.
Partial() is a method that returns an MvcHtmlString. In Razor, You can call a property or a method that returns such a string with just a @ prefix to distinguish it from plain HTML you have on the page.
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What is database pooling?
...ed to keep database connections open so they can be reused by others.
Typically, opening a database connection is an expensive operation, especially if the database is remote. You have to open up network sessions, authenticate, have authorisation checked, and so on. Pooling keeps the connections ac...
Passing arguments forward to another javascript function
... manipulate that before passing it along, for example: var copy = [].slice.call(arguments); <remove what you want> myFunc.apply(this, copy);
– Nick Craver♦
Feb 17 '12 at 11:18
...
Insert picture/table in R Markdown [closed]
... HOWTOs for tables and images. Top on my list are:
Pandoc readme, specifically tables
RStudio's RMarkdown, more details in basics (including tables) and a rewrite of pandoc's markdown.
Pictures are very simple to use but do not offer the ability to adjust the image to fit the page (see Update, b...
What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...e same thing - encapsulate the database logic for a specific entity so the calling code has no knowledge of the underlying persistence layer. From my brief research all of them typically implement your standard CRUD methods and abstract away the database-specific details.
...
What's the difference between the 'ref' and 'out' keywords?
... been set by that method, if it has been initialized before the method was called? I mean, can the called method read what the calling method passed to it as an argument?
– Panzercrisis
Mar 25 '16 at 13:46
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An async/await example that causes a deadlock
...Click for UI / MyController.Get for ASP.NET):
The top-level method calls GetJsonAsync (within the UI/ASP.NET context).
GetJsonAsync starts the REST request by calling HttpClient.GetStringAsync (still within the context).
GetStringAsync returns an uncompleted Task, indicating the REST req...