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3 years ago

Why is the Singleton pattern commonly referred to as an “anti-pattern”?

Computers and Technology

1 answer:

snow_lady [41]3 years ago

3 0

Answer:

Singleton pattern is the pattern for design that is build using the global variables which creates a lot of drawback in the designing. Singleton pattern are considered with the global variable and thus cannot be bound into single unit which complexes the components in design.

They have a loose coupled variables in design and also does not show the property of the multi-threading .These feature are responsible for the decrement in the performance and thus are not highly preferred choice for the pattern.So, it is known as the "anti- pattern".

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Describe how a computer checks whether the image just taken by the camera matches the scanned photograph.

eimsori [14]

Answer:

by it scan properly like you use Camara

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sorry I don't no other thing and I an sorry for the very short answer

5 0

2 years ago

Create a SELECT statement that returns the count, average, max and min of the invoices submitted by each vendor, who has submitt

sveta [45]

Answer:

SELECT Count(order_invoice) as number_of_invoices, Max(order_invoice) as maximum_invoice, Min(order_invoice) as minimum_invoice, Avg(order_invoice) as average_invoice

FROM vendor JOIN invoice ON invoice.id = vendor.id

WHERE order_invoice > 1

ORDER BY number_of_invoices DESC

Explanation:

The select statement of the SQL or structured query language returns twelve rows of four columns from the inner join of the vendor and invoice table in a database where the order_invoice column in the invoice table is greater than one. The result of the query is ordered by the alias column "number_of_invoices" in descending order.

8 0

2 years ago

WRITE A JAVA PROGRAM TO PRINT THE PATTERN 13579 2468 357 46 5

Inessa05 [86]

Answer:

import java.util.Scanner;

import java.lang.*;

class Main

{

public static void main(String args[])

{

int n;

//For capturing the value of n

Scanner scanner = new Scanner(System.in);

System.out.println("Enter the value of n:");

//The entered value is stored in the var n

n = scanner.nextInt();

int k=1;

printnum(n,k);

}

public static void printnum(int n,int k)

{

if(n%2==0)

{

for(int i=k;i<=n-1;i=i+2)

{

System.out.print(i);

}

System.out.println("");

}

else

{

for(int i=k;i<=n-1;i=i+2)

{

System.out.print(i);

}

System.out.println("");

}

n--;

if(n<=1)

{

System.exit(0);

}

else

{

printnum(n,k+1);

}

Explanation:

The program is self explanatory.

4 0

3 years ago

IF ANYONE ANSWERS YOUR QUESTION WITH SOMETHING LIKE THIS:

vova2212 [387]

Answer:Thank you very much! A user names SShalomeea has been hacking today. Anyone with that photo is a spammer.

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2 years ago

Read 2 more answers

Write a loop that subtracts 1 from each element in lowerScores. If the element was already 0 or negative, assign 0 to the elemen

Verdich [7]

Answer:

Replace <STUDENT CODE> with

for (i = 0; i < SCORES_SIZE; ++i) {

if(lowerScores.at(i)<=0){

lowerScores.at(i) = 0;

}

else{

lowerScores.at(i) = lowerScores.at(i) - 1;

}

Explanation:

To do this, we simply iterate through the vector.

For each item in the vector, we run a check if it is less than 1 (i.e. 0 or negative).

If yes, the vector item is set to 0

If otherwise, 1 is subtracted from that vector item

This line iterates through the vector

for (i = 0; i < SCORES_SIZE; ++i) {

This checks if vector item is less than 1

if(lowerScores.at(i)<1){

If yes, the vector item is set to 0

lowerScores.at(i) = 0;

}

else{

If otherwise, 1 is subtracted from the vector item

lowerScores.at(i) = lowerScores.at(i) - 1;

}

Also, include the following at the beginning of the program:

#include <vector>

8 0

2 years ago