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How to detect a loop in a linked list?
...s cycle-finding algorithm, also known as tortoise and hare algorithm.
The idea is to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitely meet.
Else either of
the two references(...
How can I make git ignore future revisions to a file?
...e this, preferably with a script executed whenever you pull or clone. One idea would be that anything with a particular extension (say .basefile) gets copied to a file with the extension dropped and then the file name gets added to .gitignore in that directory. So I would create a file default_val...
How to store Node.js deployment settings/configuration files?
...want a declarative / dumb language for templating / options (2) it's a bad idea to reconstruct an "almost-PL" to just do templating (or configuration)—better to re-use your existing real PL with known behaviors. in so far +1 for recycling JS to do user settings; -1 for not going the declarative ap...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...gt;> or Map<Key,Optional<Value>>. This too is usually a bad idea. It's often better to replace these usages of Optional with Null-Object values (not actual null references), or simply to omit these entries from the collection entirely.
...
How to detect if a function is called as constructor?
...uctedByX = true;
}
alert(isConstructor);
}
Obviously this is not ideal, since you now have an extra useless property on every object constructed by x that could be overwritten, but I think it's the best you can do.
(*) "instance of" is an inaccurate term but is close enough, and more conc...
Prevent any form of page refresh using jQuery/Javascript
...ng such a solution.
Breaking fundamental browser features is never a good idea, over 99.999999999% of the internet works and refreshes with F5, this is an expectation of the user, one you shouldn't break.
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Why does one use dependency injection?
...work for a trained monkey. So what do you do?
Obviously it's a quite good idea to introduce an interface ICanLog (or similar) that is implemented by all the various loggers. So step 1 in your code is that you do:
ICanLog logger = new Logger();
Now the type inference doesn't change type any more,...
How do I build a graphical user interface in C++? [closed]
...different from a CLI program, is something called an event loop. The basic idea there is somewhat complicated, and difficult to compress, but in essence it means that not a hell of a lot is going in in your main class/main function, except:
check the event queue if there's any new events
if there ...
Gradle: How to Display Test Results in the Console in Real Time?
...e all these custom listeners and stuff in the documentation, but I have no idea how to configure this.
– jpswain
Feb 24 '11 at 4:58
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How to properly seed random number generator
...are seeding with a time value. This has in my experience never been a good idea. For example, while the system clock is maybe represented in nanoseconds, the system's clock precision isn't nanoseconds.
This program should not be run on the Go playground but if you run it on your machine you get a ro...