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Boost Statechart vs. Meta State Machine
...s towards better scalability.
With Boost.Statechart you can spread the layout (i.e. states, transitions) of your state machine over multiple translation units (cpp files) in ways you can't with MSM. This allows you to make the implementation of large FSMs more maintainable and get much faster compi...
How to use HTML to print header and footer on every printed page of a document?
...est answer. The problem is browser vendors. You can make good-looking PDFs outside the browser using CSS Paged Media with commercial tools like these (and there are others): Antenna House antennahouse.com/formatter, Prince princexml.com.
– markg
Sep 9 '19 at 1:...
How can I pass selected row to commandLink inside dataTable or ui:repeat?
...hen you'll be able to access the current row by DataModel#getRowData() without passing anything around (JSF determines the row based on the request parameter name of the clicked command link/button).
public void insert() {
Item item = model.getRowData();
Long id = item.getId();
// .....
What's the difference between Ruby's dup and clone methods?
...n a wild goose chase to understand that syntax. this will help anyone else out there who might also be confused: devalot.com/articles/2008/09/ruby-singleton
– davidpm4
Mar 15 '16 at 6:24
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How to get existing fragments when using FragmentPagerAdapter
... set them internally. So the problem is how to get a reference to them without that information...
Problem with current solutions: relying on internal code
A lot of the solutions I've seen on this and similar questions rely on getting a reference to the existing Fragment by calling FragmentManager...
What is the explicit promise construction antipattern and how do I avoid it?
... return myPromiseFn(param+1); // much nicer, right?
}
Promises are all about making asynchronous code more readable and behave like synchronous code without hiding that fact. Promises represent an abstraction over a value of one time operation, they abstract the notion of a statement or expression...
What is the advantage of using forwarding references in range-based for loops?
...ormation to the compiler to do the Right Thing. In templated code it stays out of making any decision on what should happen with the objects.
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Under what circumstances are linked lists useful?
... wait-free - choice in these cases, because main operations can be carried out with a single CAS (+retries).
In a modern GC-d environment - such as Java and .NET - the ABA problem can easily be avoided.
Just wrap items you add in freshly created nodes and do not reuse those nodes - let the GC do it...
Async/await vs BackgroundWorker
...async/await, along with a few other TPL tools, to handle everything that's out there.
Since both work, it comes down to personal preference as to which you use when. What is quicker for you? What is easier for you to understand?
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Static variables in member functions
...e of A object will affect the same i and lifetime of i will remain through out the program. To add an example:
A o1, o2, o3;
o1.foo(); // i = 1
o2.foo(); // i = 2
o3.foo(); // i = 3
o1.foo(); // i = 4
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