I have this code
def longest_word(sentence)
long_word = ""
sentence.split(" ").sort_by {|x| x.length}
long_word = sentence.pop
return long_word
end
p longest_word("hello dogs are fast")
And I get the error that the method 'pop' is undefined when I try running it. Does this have something to do with gemfiles? I thought I set that stuff up already.
You are calling array method pop on a string sentence, not a received from split array of strings.
By the way, your code can be simplified:
def longest_word(sentence)
sentence.split(' ').sort_by(&:length).pop
end
p longest_word("hello dogs are fast")
#=> "hello"
You can also use max_by:
sentence.split(" ").max_by(&:length)
You're calling pop on sentence, which is a String.
You probably want this:
long_word = sentence.split(" ").sort_by {|x| x.length}.pop
split and sort_by do not change the variable in any way, they return a new value. Thus, if you don't assign this to something, sentence remains a String, "hello dogs are fast", and strings don't have #pop.
sentence = sentence.split(" ").sort_by {|x| x.length}
