Booleans in Dart are used to represent true or false values. They are a fundamental data type and are commonly used in conditional statements and loops.
Here are some examples of using boolean in Dart:
1. Assigning a boolean value:
bool isRaining = true;
isRaining and assigning a value of true to it.
2. Using a boolean in a conditional statement:
if (isRaining) {
print('Please take an umbrella!');
} else {
print('Enjoy the sunshine!');
}
In this example, we are using the
isRaining variable in an if-else statement to print a message based on whether it is raining or not.
3. Logical operators with booleans:
bool isSunny = false;
bool isWarm = true;
if (isSunny && isWarm) {
print('It is a beautiful day!');
}
In this example, we are using the
&& (logical AND) operator to check if both isSunny and isWarm are true. If they are, we print a message saying it's a beautiful day.
4. Comparing two boolean values:
bool isSummer = true;
bool isWinter = false;
if (isSummer == !isWinter) {
print('The seasons are not the same!');
}
In this example, we are using the
== (equality) and ! (logical NOT) operators to compare the values of isSummer and isWinter. If they are not the same, we print a message.
These are just a few examples of using boolean in Dart. Booleans are an important and useful data type in programming, and it's important for developers to understand how to use them effectively.