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require 'erb' | |
class Num | |
def initialize(num) | |
@n = num | |
end | |
end | |
# okay, some object we want to evaluate our ERB within, | |
# to do that we need a binding for it |
# ----- Common Linked List Methods ----- | |
def add_to_front(list, data) | |
build_list(data, list) | |
end | |
def add_to_back(list, data) | |
return build_list(data, empty_list) if empty?(list) | |
new_tail = add_to_back(tail(list), data) | |
build_list(head(list), new_tail) |