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What is the difference between tree depth and height?
...wrong. The depth of the root node should be 0. I will delete my comment in order not to confuse people.
– jdhao
May 10 '18 at 1:13
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How to set default values in Rails?
...read the original poster's question again, Nikita, and then my comments in order, it may make more sense to you. If not... Well, the question's been answered. Have a nice day.
– SFEley
Mar 22 '11 at 3:06
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Should I always return IEnumerable instead of IList?
...is that it allows you to work with the broadest range of input possible in order to get as much reuse out of a component as possible. On the other hand, since you already know exactly what kind of object you have handy, there's not much point in masking it.
– Mel
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Using Regex to generate Strings rather than match them
...-3]([a-c]|[e-g]{1,2})");
// generate the second String in lexicographical order that matches the given Regex.
String secondString = generex.getMatchedString(2);
System.out.println(secondString);// it print '0b'
// Generate all String that matches the given Regex.
List<String> matchedStrs = g...
Difference between an API and SDK
...is part of the systems of P. It is a kit for software developers to use in order to modify, configure, fix, improve, etc the software piece of P.
If C wants to offer P's functionality to other companies/systems, it does so with an API.
This is an interface to P. A way for external systems to int...
Proper URL forming with Query String and Anchor Hashtag
... string and anchor tag (hash tag) are visible in a URL, what is the proper order for them to appear?
4 Answers
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PowerShell says “execution of scripts is disabled on this system.”
...xecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
Note: In order to change the Execution policy, you must be running PowerShell As Adminstrator.
If you are in regular mode and try to change the execution policy, you'll get the following error:
Access to the registry key 'HKEY_LOC...
Difference between validate(), revalidate() and invalidate() in Swing GUI
... manager used by it), changes. Which pushes it to the invalid state. So in order to validate this change, you have to explicitly call revalidate().
invalidate() : This is something I have never used, so there might not be much info I can provide about it. But it seems like the scenarios presented a...
What's Up with Logging in Java? [closed]
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In chronological order of api apperance (as far as I know):
Log4j because most everybody uses it (in my experience)
Commons Logging because open source projects use it (so they can integrate with whatever logging framework is used in the in...
Static nested class in Java, why?
... compiler will implicitly prepend the arg sequence of every constructor in order to pass a reference of an instance of the enclosing class. Pretty simple.
– tonix
Mar 12 '15 at 6:55
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