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What are the rules for evaluation order in Java?
...e and associativity. And in the second step recursively evaluate that tree starting with the root. With the evaluation of a node being: Evaluate the immediate child nodes left to right and then the note itself. | One advantage of this model is it trivially handles the case where binary operators hav...
How to Detect if I'm Compiling Code with a particular Visual Studio version?
...bout box, not to the year in the name. A thorough list can be found here. Starting recently, Visual Studio will start updating its ranges monotonically, meaning you should check ranges, rather than exact compiler values.
cl.exe /? will give a hint of the used version, e.g.:
c:\program files (x86)...
Analyze audio using Fast Fourier Transform
... you the frequency content of your signal at N equally spaced frequencies, starting at 0. Because your sampling frequency is 44100 samples / sec. and the number of points in your FFT is 256, your frequency spacing is 44100 / 256 = 172 Hz (approximately)
The first coefficient in your array will be t...
How to generate an entity-relationship (ER) diagram using Oracle SQL Developer
...Smith (link).
Excerpt:
Entity relationship diagram
Getting Started
To work through the example, you need an Oracle Database instance with the sample HR schema that’s available in the default database installation. You also need version 4.0 of Oracle SQL Developer, in which you...
Why is lock(this) {…} bad?
...cy Drew", Age = 15};
var a = new Thread(nancy.LockThis);
a.Start();
var b = new Thread(Timewarp);
b.Start(nancy);
Thread.Sleep(10);
var anotherNancy = new Person { Name = "Nancy Drew", Age = 50 };
var c = new Thread(NameChange);
c.Start...
What is the HEAD in git?
...ut this is the playback and record head on a cassette tape recorder. As we start recording audio, the tape moves past the head, and it records onto it. when we press Stop the place where that record head is stopped is the place it'll start recording again when we press Record a second time.Now we ca...
Indenting #defines
...
Pre-ANSI C preprocessor did not allow for space between the start of a line and the "#" character; the leading "#" had to always be placed in the first column.
Pre-ANSI C compilers are non-existent these days. Use which ever style (space before "#" or space between "#" and the identi...
EJB's - when to use Remote and/or local interfaces?
...t in the same JVM (this doesn't mean using only one server/JVM).
(...) Start off by using Local interfaces, and gradually upgrade to Remote interfaces where applicable?
I would probably start by using Local interfaces. And as already hinted, switching to remote interfaces is not always mandato...
Why not inherit from List?
When planning out my programs, I often start with a chain of thought like so:
27 Answers
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Unable to Cast from Parent Class to Child Class
...ng building a ferrari with the properties defined in base object car. Or, start with a human and create a Boy. Casting and direct use? Agree that's a no-no. But if it's part of constructor or something, could work. The serialization answer below is a nice touch.
– sirthoma...