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Transaction isolation levels relation with locks on table
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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
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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...
What does “dereferencing” a pointer mean?
...ecause of that error in
the code is a failed dereference
operation. In Java the incorrect
dereference will be flagged politely
by the runtime system. In compiled
languages such as C, C++, and Pascal,
the incorrect dereference will
sometimes crash, and other times
corrupt memory in so...
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
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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...
How to fix “Headers already sent” error in PHP
...ent as Latin-1) or similar "garbage".
In particular graphical editors and Java based IDEs are oblivious to its
presence. They don't visualize it (obliged by the Unicode standard).
Most programmer and console editors however do:
There it's easy to recognize the problem early on. Other editors may...
Can hash tables really be O(1)?
...As well as the above, if you are using immutable objects as your keys e.g. Java Strings, having calculated the hash once, you can remember it and not have to calculate it again. On the other hand, you can't usually rely on the hash to tell if two keys are equal once you have found the right bucket,...