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What is a magic number, and why is it bad? [closed]
...r is a direct usage of a number in the code.
For example, if you have (in Java):
public class Foo {
public void setPassword(String password) {
// don't do this
if (password.length() > 7) {
throw new InvalidArgumentException("password");
}
}
}
T...
Parameterize an SQL IN clause
...s in behavior, dependent on the DBMS and version. (A shout out to all you Java developers so keen on being able to use any database engine interchangeably.)
Domain knowledge
We may have specialized knowledge of the domain for the column, (that is, the set of allowable values enforced for the colu...
How well is Unicode supported in C++11?
... library I know of for this is ICU. The C++ interface was derived from the Java one though, so it's far from being idiomatic.
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Transaction isolation levels relation with locks on table
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Not the answer you're looking for? Browse other questions tagged java transactions isolation-level or ask your own question.
Referring to the null object in Python
...one. This is more or less the same difference between "==" and "equals" in Java. The operator "is", indeed, checks if TWO OBJECTS are the same (the same instance and NOT the same content)!
– Paolo Rovelli
Dec 13 '13 at 14:43
...
Big O, how do you calculate/approximate it?
...more information on the Chapter 2 of the Data Structures and Algorithms in Java book.
There is no mechanical procedure that can be used to get the BigOh.
As a "cookbook", to obtain the BigOh from a piece of code you first need to realize that you are creating a math formula to count how many ste...
How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
...
How do you fix a bad merge, and replay your good commits onto a fixed merge?
... 475593a Add global .gitignore file for OS X
pick 1b7f496 Add alias for Dr Java to Bash config (OS X)
The commit that you want to modify or remove will be at the top of this list.
To remove it, simply delete its line in the list. Otherwise, replace "pick" with
"edit" on the 1st line, like so:
edi...
Why is an int in OCaml only 31 bits?
...er takes place. OCaml is not an object-oriented language like Smalltalk or Java are. There is never any reason to retrieve the methods table of an OCaml int.
– Pascal Cuoq
Oct 3 '13 at 23:06
...
How can I record a Video in my Android App.?
...:layout_weight="1" >
</SurfaceView>
Your Main Activity: Video.java
public class Video extends Activity implements OnClickListener,
SurfaceHolder.Callback {
private static final String TAG = "CAMERA_TUTORIAL";
private SurfaceView mSurfaceView;
private SurfaceHolder mHolder;
priva...