What are the best practices for using procs and lambdas in Ruby?

What are the best practices for using procs and lambdas in Ruby?

When using procs and lambdas in Ruby, it's important to understand their differences. Procs are more flexible but can lead to unexpected behavior, while lambdas enforce argument checking and return behavior.

Can you give me an example of when to use a lambda instead of a proc?

Sure! Use a lambda when you need strict argument checking. For instance, if you want to ensure that a method receives exactly two arguments, a lambda will raise an error if it doesn't.

What about performance? Are there any differences?

Yes, lambdas are generally faster than procs because they have a stricter return behavior and argument checking. However, the performance difference is usually negligible for most applications.

Are there any common pitfalls to avoid?

Definitely! One common pitfall is using procs when you need a lambda, which can lead to unexpected returns. Always consider the context and behavior you need.