I saw points has been deducted for a class which we have requested to move out as my son is out of town for this week and the instructor Srihari has acknowledged the same.
Can you pl. restore the points for the below class
Looking for AP chemistry tuition for my 11th grade high schooler.
Thank you!
Hello, I am looking for tutors/ classes that can teach AP Physics for my son. He is not currently taking AP Physics. This will be next school year. He is doing pre calculus in math currently and has done algebra 1 & 2 & geometry (US curriculum). I would like to know if there are options for this and would appreciate some details.
Thank you, Gayathri
My daughter, Ishita Saraf has a Algebra 2 class tomorrow (Sunday, 29 Sept) at 6 pm PST with Tutor Shaista Malik. She cannot make it due to unforeseen circumstances. Can we reschedule to anytime between 1-5 pm PST tomorrow?
Rajiv Saraf
What is overloading?
Overloading simply refers to defining multiple methods in a class, that have the same name, but differ in the number of parameters, the type of parameters, or a combination of both. Consider the following java methods below in the Product class, for instance, which compute and return the product of a number:
what is SQL joins?
To merge rows from two or more tables according to a shared column, SQL joins are utilized. This facilitates data analysis and manipulation by enabling you to access data from numerous tables in a single query.
Here are the main types of SQL joins:
Definition: Combines rows from two tables based on a common column but only returns the rows where there is a match in both tables.
Syntax:
Example:
If we have Customers
and Orders
tables, an INNER JOIN will return only customers who have placed orders.
Definition: Returns all rows from the left table (the first table), and the matching rows from the right table (the second table). If there is no match, NULL values are returned for the right table columns.
Syntax:
Example:
A LEFT JOIN between Customers
and Orders
will return all customers, even if they haven't placed any orders.
Definition: Similar to the LEFT JOIN, but returns all rows from the right table (the second table), and the matching rows from the left table (the first table). If there is no match, NULL values are returned for the left table columns.
Syntax:
Example:
A RIGHT JOIN between Customers
and Orders
will return all orders, even if they weren't placed by any customer.
Definition: Returns all rows when there is a match in either the left table or the right table. If there is no match, NULL values are returned for the missing side.
Syntax:
Example:
A FULL JOIN between Customers
and Orders
will return all customers and all orders, even if there is no match.
Definition: Returns the Cartesian product of the two tables, i.e., all possible combinations of rows between the two tables. No ON condition is used here.
Syntax:
Example:
If Customers
has 3 rows and Orders
has 2 rows, a CROSS JOIN will return 6 rows (3 * 2).
Definition: A self join is a join where a table is joined with itself. It is useful for hierarchical or recursive relationships within the same table.
Syntax:
Example: A table of employees with a manager reference could be joined with itself to show each employee and their manager.
what is overriding?
Overriding refers to rewriting a method in a subclass that is already provided by its respective superclass. If the method in the subclass is said to have the same name as the method in its respective superclass, AND the same parameters or method signature, AND the same return type, the method in the subclass is said to "override" the method in the superclass. Overriding is one of the fundamental concepts in polymorphism. Consider the following example:
// Java program to demonstrate // method overriding in java // Base Class class SuperClass { void show() { System.out.println("SuperClass's show."); } } // Inherited class class SubClass extends SuperClass { // This method overrides show() of SuperClass @Override void show() { System.out.println("SubClass's show()"); } } // Driver class class Main { public static void main(String[] args) { // If a SuperClass type reference refers // to a SuperClass object, then SuperClass's // show is called SuperClass obj1 = new SuperClass(); obj1.show(); // If a SuperClass type reference refers // to a SubClass object, then SubClass's show() // is called. This is called RUN TIME // POLYMORPHISM. SuperClass obj2 = new SubClass(); obj2.show(); } }
what is javascript?
JavaScript is another programming language that is considered to be "interpreted", meaning that the source code you write is executed directly by the interpreter line-by-line, rather than being compiled into machine code ahead of time. JavaScript is primarily used in the frontend development, such as creating interactive elements in websites and other web applications. However, it is also used widely for backend development, which involves server-side programming, thanks to Node.js.
what is the difference between manual and automation testing?