Elixir Engine

Basics

Elixir Case

Case Expressions

Elixir case expressions handle conditions with pattern matching.

Introduction to Elixir Case Expressions

Elixir's case expressions allow developers to handle multiple conditions using pattern matching. This feature is particularly useful when you want to match against specific patterns or values, providing a powerful way to control the flow of your program.

Basic Syntax of Case Expressions

The basic syntax of a case expression involves specifying a variable or value to match against a series of patterns. Each pattern is followed by an arrow (->) and the corresponding block of code to execute if the pattern matches.

Here is the general structure:

Example: Matching Simple Values

Let's look at an example where we use a case expression to match simple integer values:

Example: Pattern Matching with Tuples

Case expressions can also match against more complex data structures, such as tuples. Here is an example:

Using Guards with Case Expressions

Elixir allows the use of guards in case expressions to further refine pattern matching. Guards are additional conditions that can be applied to patterns to create more specific matches.

Here's an example of using guards:

Conclusion

Elixir's case expressions provide a versatile way to handle multiple conditions through pattern matching. By leveraging patterns, tuples, and guards, developers can create clear and concise code that efficiently handles complex logic.

Next, we will explore the cond construct in Elixir, which offers another approach to handling multiple conditions.

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