Boolean

Dart Boolean data type is used to check whether a given statement true or false. The true and false are the two values of the Boolean type, which are both compile-time constants. In Dart, The numeric value 1 or 0 cannot be used to specify the true or false. The bool keyword is used to represent the Boolean value. The syntax of declaring the Boolean variable is given below.

Syntax –

bool var_name = true;    

OR    

bool var_name = false;  

Consider the following example.

Example –

void main() {  

bool check;  

check = 20>10;  

print("The statement is = ${check}");  

}  

Output:

true

Explaination –

We have declared the bool variable check that will use to verify the given expression. The expression 20>12 returned the true and we printed the result.