iteration code snippets in ruby

can you patiently explain what happens in this? `words_array.each do |word| word_counts[word] ||= 0 word_counts[word] += 1 end` in ruby

count instances of an element inside an array in ruby

count words in array in ruby

create a loop in ruby

find all the strings matching ‘tony’ in an array of strings, then return how many there are. if there are none then return nil in ruby

find the average of all nodes in a linked list in ruby

find the mode of all nodes in a linked list in ruby

find the standard deviation of all keys in a map in ruby

given a string of digits, output all the contiguous substrings of length n in that string in the order that they appear. in ruby

how to calculate prime numebrs in ruby

how to iterate over each elements of "the quick brown fox jumps over the lazy dog" to check if they exist in [*'a'..'z']? ignore white space in ruby

iterate an array of strings with index in ruby

iterate over a list in ruby

iterate over an array of strings with index using the map function in ruby

iterate through json variables in ruby

teach me array#each what it does and how? in ruby

what does "iterating over consecutive elements" mean and show example in ruby