How To Check If Type Is Boolean

When working on software projects, it's essential to be able to check the type of data you're dealing with. One common data type that developers often need to verify is Boolean. In this article, we'll walk you through how to check if a type is Boolean in various programming languages.

### JavaScript

To check if a type is Boolean in JavaScript, you can use the `typeof` operator. Here's a simple example:

const value = true;

if (typeof value === 'boolean') {
  console.log('The value is a Boolean.');
} else {
  console.log('The value is not a Boolean.');
}

### Python

In Python, you can use the `isinstance()` function to determine if a variable is a Boolean. Here's an example:

value = False

if isinstance(value, bool):
    print("The value is a Boolean.")
else:
    print("The value is not a Boolean.")

### Java

Java also provides a way to check if a type is Boolean. You can use the `instanceof` operator for this. Here's how you can do it:

boolean value = true;

if (value instanceof Boolean) {
    System.out.println("The value is a Boolean.");
} else {
    System.out.println("The value is not a Boolean.");
}

### C#

For C# developers, you can use the `is` keyword to check if a variable is of type Boolean. Here's an example:

bool value = false;

if (value is bool) {
    Console.WriteLine("The value is a Boolean.");
} else {
    Console.WriteLine("The value is not a Boolean.");
}

### PHP

In PHP, you can use the `is_bool()` function to check if a variable is a Boolean. Here's how you can do it:

$value = true;

if (is_bool($value)) {
    echo "The value is a Boolean.";
} else {
    echo "The value is not a Boolean.";
}

By following these simple examples in various programming languages, you can easily check if a type is Boolean in your code. Understanding the data types you're working with is crucial for writing reliable and bug-free software. So next time you need to verify if a variable is a Boolean, simply refer back to this quick guide for a smooth coding experience.