Conditional Expressions
Learn how to control the flow of code execution with conditional expressions!
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Key Concepts
Review core concepts you need to learn to master this subject
If Expressions
Else Expressions
Else-If Expressions
Comparison Operators
Logical Operators
The AND Operator: &&
The OR Operator : ||
The NOT Operator: !
If Expressions
If Expressions
var morning = true
if (morning) {
println("Rise and shine!")
}
// Prints: Rise and shine!An if expression is a conditional that runs a block of code when its condition has a true value.
Conditional Expressions
Lesson 1 of 1
- 1When we go on adventures, sometimes the road is straightforward and other times, the road splits and we must choose a path to take. Conditionals are like forks in the road: they determine the direc…
- 2An if expression is a conditional that executes a body of code only when a specified Boolean value returns true. Assume we had a Boolean variable called raining: var raining = true We can use an …
- 3Often accompanying the if expression is another conditional called the else expression. The else expression executes a block of instructions when the condition in the if expression has a false valu…
- 4To create more complex conditions for our conditionals to evaluate, we can use comparison operators. Comparison operators evaluate the relationship between two values in order to return an expres…
- 5Another way to compare two values is with the equality operators. We can use the equality operator (==) to check if the value on the right side of the operator is equal to the value on the left….
- 6An else-if expression can be used to add a plethora of more conditionals for our program to evaluate. Let’s say we created a Kotlin program that determines what we will wear depending on the tempe…
- 7Logical operators evaluate the relationship between two or more Boolean expressions and return a true or false value. There are several operators that we can use: &&, ||, and !. The logical AND op…
- 8We can combine expressions containing logical operators to create even more complex Boolean expressions. When combining logical operators, the order of evaluation is as follows: 1. Boolean express…
- 9Similar to the concept of a “dream inside of a dream” from the movie Inception, a conditional can exist inside of another conditional. This occurrence is …
- 10Another expression that controls the flow of execution in a program is the when expression. A when expression is made up of multiple branches that contain values, or arguments, to check for. If …
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Conditional Expressions
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