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Following is a simple program demonstrating how to use regular expression in Java. Java Regex Characters
To debug obfuscated JavaScript code, you need to use a JavaScript formatter or beautifier. Go to the following link to beautify JavaScript, In the left section, add your obfuscated JavaScript code and click Beautify as shown below, On clicking, you can see Beautified JavaScript code in the right section.
The unary operator works on a single operand. Following are the examples of unary operators supported in java. Assume A = 60 and B = 20.OperatorDescriptionExample~ (bitwise compliment)Binary One's Complement Operator is unary and has the effect of 'flipping' bits.(~A ) will give -61 which is 1100 0011 in 2's complement form due to a signed binary number.++ (Increment)Increases the value of operand by 1.B++ gives 21-- (Decrement)Decreases the value of operand by 1.B-- gives 19
C++ has a standard library that contains common functionality you use in building your applications like containers, algorithms, etc. If names used by these were out in the open, for example, if they defined a queue class globally, you'd never be able to use the same name again without conflicts. So they created a namespace, std to contain this change.The using namespace statement just means that in the scope it is present, make all the things under the std namespace available without having to prefix std:: before each of them.While this practice is okay for example code, pulling in the ... Read More
Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert [50, 100] to Number in JavaScript − Example Live Demo Convert [50,100] to Number var myVal = [50,100]; document.write("Number: " + Number(myVal));
Java programs are simple text-based programs and can be edited using any text editor like notepad etc. The filename should be same as class name.
To check this we need to have the profiling information which indicates resource usage for the statements executed during the course of the current session. Profiling information can get by SHOW PROFILE and SHOW PROFILES statement. Before running these statements, the profiling session variable must be set to 1 as follows − mysql> set profiling = 1; Query OK, 0 rows affected (0.00 sec) Now if we will run SHOW PROFILES statement then it will display the list of most recent statements sent to the server along with the duration and query id. mysql> show profiles; +----------+------------+--------------------------------------+ ... Read More
Object slicing is used to describe the situation when you assign an object of a derived class to an instance of a base class. This causes a loss of methods and member variables for the derived class object. This is termed as information being sliced away. For example, class Foo { int a; }; class Bar : public Foo { int b; }; Since Bar extends Foo, it now has 2 member variables, a and b. So if you create a variable bar of type Bar and then create ... Read More
& is a bitwise operator and compares each operand bitwise.It is a binary AND Operator and copies a bit to the result if it exists in both operands.Assume integer variable A holds 60 and variable B holds 13 then (A & B) will give 12 which is 0000 1100.Whereas && is a logical AND operator and operates on boolean operands. If both the operands are true, then the condition becomes true otherwise it is false. Assume boolean variable A holds true and variable B holds false then (A && B) is false.& is to be used during bitwise operations and && is useful during logical operations.
| is a bitwise operator and compares each operands bitwise.It is a binary OR Operator and copies a bit to the result it exists in either operands.Assume integer variable A holds 60 and variable B holds 13 then (A | B) will give 61 which is 0011 1101.Whereas || is a logical OR operator and operates on boolean operands. If both the operands are false, then the condition becomes false otherwise it is true. Assume boolean variable A holds true and variable B holds false then (A && B) is true.| is to be used during bitwise operations and || is useful during logical operations.