Question

Where can you use a wildcard with lispy?

Answer 1

In Lispy, a wildcard can be used to match and manipulate elements of a list.

Step-by-step explanation:

In Lispy, a wildcard can be used to match and manipulate elements of a list. The wildcard character is denoted by an underscore (_). When using a wildcard in Lispy, you can match any element in a list regardless of its value. This can be useful when you want to perform operations on multiple elements or when you want to ignore certain elements in a list.

For example, let's say you have a list '(1 2 3 4 5)'. If you want to add 1 to every element in the list, you can use the wildcard like this: '(map (lambda (x) (+ x 1)) '(1 _ _ _ _))'. This will apply the operation to the first element and ignore the rest.

Another example is when you want to select all elements except the first one in a list. You can use the wildcard like this: '(cdr '(1 _ _ _ _))', which will return '(2 3 4 5)'.