What does and mean?

The symbol "&&" in programming languages typically represents the logical AND operator. It's used to combine two or more conditions, and the result is true only if all of the conditions are true.

Here's how it works:

* Condition 1 && Condition 2

* If both Condition 1 and Condition 2 are true, the entire expression is true.

* If either Condition 1 or Condition 2 is false, the entire expression is false.

Example:

```

if (age >= 18 && isCitizen == true) {

// You are eligible to vote

}

```

In this example, the code will only execute the block if both conditions are met:

* age >= 18 (the person is 18 years old or older)

* isCitizen == true (the person is a citizen)

In other contexts:

* In mathematics, "&&" can also be used as a symbol for the logical AND operator.

Let me know if you have any other questions!