When creating Random instances with the same seed, the same numbers will be generated.
int seed = 5;
for (int i = 0; i < 2; i++)
{
Console.WriteLine("Random instance " + i);
Random rnd = new Random(seed);
for (int j = 0; j < 5; j++)
{
Console.Write(rnd.Next(...
Two Random class created at the same time will have the same seed value.
Using System.Guid.NewGuid().GetHashCode() can get a different seed even in the same time.
Random rnd1 = new Random();
Random rnd2 = new Random();
Console.WriteLine("First 5 random number in rnd1");
for (int i = 0...
The main methods that are useful with this class are popleft and appendleft
from collections import deque
d = deque([1, 2, 3])
p = d.popleft() # p = 1, d = deque([2, 3])
d.appendleft(5) # d = deque([5, 2, 3])
There are three visibility types that you can apply to methods (class/object functions) and properties (class/object variables) within a class, which provide access control for the method or property to which they are applied.
You can read extensively about these in the PHP Documentation for OOP Vi...
This query selects all employees not on the Supervisors table.
SELECT *
FROM Employees
WHERE EmployeeID not in (SELECT EmployeeID
FROM Supervisors)
The same results can be achieved using a LEFT JOIN.
SELECT *
FROM Employees AS e
LEFT JOIN Supervisors AS s ON s.E...
Definition : When multiple methods with the same name are declared with different parameters, it is referred to as method overloading. Method overloading typically represents functions that are identical in their purpose but are written to accept different data types as their parameters.
Factors af...
The NSDate class provides methods for creating NSDate objects corresponding to a given date and time. An NSDate can be initialized using the designated initializer, which:
Returns an NSDate object initialized relative to 00:00:00 UTC on 1 January 2001 by a given number of seconds.
NSDate *date...
The procedure describes how to add an Object library reference, and afterwards how to declare new variables with reference to the new library class objects.
The example below shows how to add the PowerPoint library to the existing VB Project.
As can be seen, currently the PowerPoint Object library...
Double-quoted strings use interpolation and escaping – unlike single-quoted strings. To double-quote a string, use either double quotes " or the qq operator.
my $greeting = "Hello!\n";
print $greeting;
# => Hello! (followed by a linefeed)
my $bush = "They misunderestimat...
Large Multi-Line strings are burdensome to write.
my $variable = <<'EOF';
this block of text is interpreted literally,
no \'quotes matter, they're just text
only the trailing left-aligned EOF matters.
EOF
NB: Make sure you ignore stack-overflows syntax highlighter: It is very wrong.
A...
In Haskell, data types can have arguments just like functions. Take the Maybe type for example.
Maybe is a very useful type which allows us to represent the idea of failure, or the possiblity thereof. In other words, if there is a possibility that a computation will fail, we use the Maybe type ther...
Oracle supports DATE (includes time to the nearest second) and TIMESTAMP (includes time to fractions of a second) datatypes, which allow arithmetic (addition and subtraction) natively. For example:
To get the next day:
select to_char(sysdate + 1, 'YYYY-MM-DD') as tomorrow from dual;
To get the ...
A common pitfall of child classes is that, if your parent and child both contain a constructor(__construct()) method, only the child class constructor will run. There may be occasions where you need to run the parent __construct() method from it's child. If you need to do that, then you will need to...
To support a given application, you often create a new role and database to match.
The shell commands to run would be these:
$ createuser -P blogger
Enter password for the new role: ********
Enter it again: ********
$ createdb -O blogger blogger
This assumes that pg_hba.conf has been prope...
Table file with header, footer, row names, and index column:
file: table.txt
This is a header that discusses the table file
to show space in a generic table file
index name occupation
1 Alice Salesman
2 Bob Engineer
3 Charlie Janitor
This is a footer becaus...
