What are advanced functions in Ruby?

What are advanced functions in Ruby?

Advanced functions in Ruby include concepts like closures, higher-order functions, and procs/lambdas. Would you like to know more about any specific topic?

Can you explain closures in Ruby?

Sure! A closure in Ruby is a function that captures the lexical scope in which it was defined. This means it can access variables from its surrounding context even when called outside that context.

How do procs and lambdas differ?

Procs and lambdas are both types of closures, but they differ in how they handle return statements and argument checking. Lambdas enforce the number of arguments, while procs do not.

Can you give me an example of a higher-order function?

Absolutely! A higher-order function is one that takes another function as an argument or returns a function. For example, the map method in Ruby is a higher-order function that applies a given block to each element of an array.