“`html

Understanding Null

In many programming languages and databases, ‘null’ is a special value that represents the absence of a value or an unknown value.

// Example in JavaScript
let unassignedVariable;
let explicitlyNull = null;
let emptyString = “”;
let zero = 0;

document.write(“

unassignedVariable (undeclared or uninitialized): ” + unassignedVariable + ” (type: ” + typeof unassignedVariable + “)

“);
document.write(“

explicitlyNull (assigned null): ” + explicitlyNull + ” (type: ” + typeof explicitlyNull + “)

“);
document.write(“

emptyString (assigned an empty string): ‘” + emptyString + “‘ (type: ” + typeof emptyString + “)

“);
document.write(“

zero (assigned the number 0): ” + zero + ” (type: ” + typeof zero + “)

“);

// Checking for null
if (explicitlyNull === null) {
document.write(“

explicitlyNull is indeed null.

“);
}

if (unassignedVariable === undefined) {
document.write(“

unassignedVariable is undefined.

“);
}

// Null vs. Undefined in JavaScript
document.write(“

Is null == undefined? ” + (null == undefined) + ” (loose equality)

“);
document.write(“

Is null === undefined? ” + (null === undefined) + ” (strict equality)

“);

Database Context (Conceptual)

In a database table, a column can be set to allow NULL values. This means that a row might not have a value for that specific column.

        -- SQL Example
        CREATE TABLE Products (
            ProductID INT PRIMARY KEY,
            ProductName VARCHAR(255) NOT NULL,
            Description TEXT, -- Can be NULL
            Price DECIMAL(10, 2)
        );

        INSERT INTO Products (ProductID, ProductName, Description, Price)
        VALUES (1, 'Laptop', 'Powerful and portable', 1200.00);

        INSERT INTO Products (ProductID, ProductName, Price)
        VALUES (2, 'Mouse', 25.00); -- Description will be NULL

        -- Querying for NULL values
        SELECT * FROM Products WHERE Description IS NULL;
    

Null is distinct from an empty string, a zero, or a boolean false. It specifically indicates that there is no value.

“`

CODE	REWARDS
LOGINBOOSTAPRIL	450 Gold, 3960 Gems, 30 Soul Crystals
TAOBLESSINGS2025	60 Gems, 2690 Soul Crystals, 680 Gold
4R3OI8DGAP2	410 Soul Crystals, 20 Gems, 90 Gold
C6374OOPIT	1960 Gems, 840 Gold
A83CDT6RN0M	20 Gems
TAOCULTEXP50	60 Gems
13DOCTA249	980 Gems, 890 Soul Crystals, 30 Gold
O9421IA6	7240 Gems, 2380 Soul Crystals, 10 Gold
DTOAPR2025GIFT	870 Soul Crystals, 7380 Gold, 170 Gems
RAGINGDEMON25	610 Gems, 8350 Gold
MDR0DPG52N	80 Gems, 520 Gold, 90 Soul Crystals
MGOINDAOEOX	9510 Soul Crystals, 30 Gems, 8340 Gold
ADDIEMMRE2NOE	5480 Gold, 80 Gems, 710 Soul Crystals
ADDEICERNOS	4280 Gold, 7350 Gems
EDMOXDOPPG	8520 Gems
MOETIDTERCE	570 Gold, 1250 Gems, 8410 Soul Crystals
RNDOIIT	5730 Gems, 850 Gold, 120 Soul Crystals
DPMEGODAE	530 Gold, 4670 Soul Crystals, 7130 Gems
EAPISMO	70 Gems
RXOEMMDO	2540 Gems
OOPIDSOGNA	4320 Gems
MSCI2IXEDDDDR	40 Gems

To redeem codes in Demonic Tao: Launch the game, log in, access main menu, select “Redeem Code“, enter code, and confirm.